Finding the Fourth Proportional to 151,610,111.72, 209,221,954.49 and 81,995,492.58

Step by Step Solution

1. Step 1: Write the proportion equation
   151,610,111.72 : 209,221,954.49 = 81,995,492.58 : x
2. Step 2: Convert to fraction form
   151,610,111.72/209,221,954.49 = 81,995,492.58/x
3. Step 3: Cross multiply
   151,610,111.72x = 209,221,954.49 × 81,995,492.58
4. Step 4: Simplify right side
   151,610,111.72x = 17,155,257,216,547,916
5. Step 5: Solve for x
   x = 17,155,257,216,547,916/151,610,111.72
6. Step 6: Final answer
   x = 113,153,779.93