Finding the Fourth Proportional to 123,491.43, 185,088.47 and 56,840.31

Step by Step Solution

1. Step 1: Write the proportion equation
   123,491.43 : 185,088.47 = 56,840.31 : x
2. Step 2: Convert to fraction form
   123,491.43/185,088.47 = 56,840.31/x
3. Step 3: Cross multiply
   123,491.43x = 185,088.47 × 56,840.31
4. Step 4: Simplify right side
   123,491.43x = 10,520,485,728.02
5. Step 5: Solve for x
   x = 10,520,485,728.02/123,491.43
6. Step 6: Final answer
   x = 85,192.03