Finding the Fourth Proportional to 156,985.49, 235,541.12 and 57,152.59

Step by Step Solution

1. Step 1: Write the proportion equation
   156,985.49 : 235,541.12 = 57,152.59 : x
2. Step 2: Convert to fraction form
   156,985.49/235,541.12 = 57,152.59/x
3. Step 3: Cross multiply
   156,985.49x = 235,541.12 × 57,152.59
4. Step 4: Simplify right side
   156,985.49x = 13,461,784,184.89
5. Step 5: Solve for x
   x = 13,461,784,184.89/156,985.49
6. Step 6: Final answer
   x = 85,751.77