Finding the Fourth Proportional to 72,591, 108,784.32 and 57,733.98

Step by Step Solution

1. Step 1: Write the proportion equation
   72,591 : 108,784.32 = 57,733.98 : x
2. Step 2: Convert to fraction form
   72,591/108,784.32 = 57,733.98/x
3. Step 3: Cross multiply
   72,591x = 108,784.32 × 57,733.98
4. Step 4: Simplify right side
   72,591x = 6,280,551,755.19
5. Step 5: Solve for x
   x = 6,280,551,755.19/72,591
6. Step 6: Final answer
   x = 86,519.70