Finding the Fourth Proportional to 468,387,456.34, 646,162,722.21 and 282,689,111.38

Step by Step Solution

1. Step 1: Write the proportion equation
   468,387,456.34 : 646,162,722.21 = 282,689,111.38 : x
2. Step 2: Convert to fraction form
   468,387,456.34/646,162,722.21 = 282,689,111.38/x
3. Step 3: Cross multiply
   468,387,456.34x = 646,162,722.21 × 282,689,111.38
4. Step 4: Simplify right side
   468,387,456.34x = 182,663,165,748,426,688
5. Step 5: Solve for x
   x = 182,663,165,748,426,688/468,387,456.34
6. Step 6: Final answer
   x = 389,983,043.47