Finding the Fourth Proportional to 72,688,081.12, 100,320,414.24 and 46,612,042.72

Step by Step Solution

1. Step 1: Write the proportion equation
   72,688,081.12 : 100,320,414.24 = 46,612,042.72 : x
2. Step 2: Convert to fraction form
   72,688,081.12/100,320,414.24 = 46,612,042.72/x
3. Step 3: Cross multiply
   72,688,081.12x = 100,320,414.24 × 46,612,042.72
4. Step 4: Simplify right side
   72,688,081.12x = 4,676,139,434,242,976
5. Step 5: Solve for x
   x = 4,676,139,434,242,976/72,688,081.12
6. Step 6: Final answer
   x = 64,331,584.52