Finding the Fourth Proportional to 156,131.86, 234,171.15 and 56,272.18

Step by Step Solution

1. Step 1: Write the proportion equation
   156,131.86 : 234,171.15 = 56,272.18 : x
2. Step 2: Convert to fraction form
   156,131.86/234,171.15 = 56,272.18/x
3. Step 3: Cross multiply
   156,131.86x = 234,171.15 × 56,272.18
4. Step 4: Simplify right side
   156,131.86x = 13,177,321,103.61
5. Step 5: Solve for x
   x = 13,177,321,103.61/156,131.86
6. Step 6: Final answer
   x = 84,398.67