Finding the Fourth Proportional to 209,935,164,916.83, 289,710,340,390.71 and 118,502,961,109.23

Step by Step Solution

1. Step 1: Write the proportion equation
   209,935,164,916.83 : 289,710,340,390.71 = 118,502,961,109.23 : x
2. Step 2: Convert to fraction form
   209,935,164,916.83/289,710,340,390.71 = 118,502,961,109.23/x
3. Step 3: Cross multiply
   209,935,164,916.83x = 289,710,340,390.71 × 118,502,961,109.23
4. Step 4: Simplify right side
   209,935,164,916.83x = 34,331,533,200,262,093,078,528
5. Step 5: Solve for x
   x = 34,331,533,200,262,093,078,528/209,935,164,916.83
6. Step 6: Final answer
   x = 163,533,980,664.28