Finding the Fourth Proportional to 156,916.16, 235,300.14 and 57,006.72

Step by Step Solution

1. Step 1: Write the proportion equation
   156,916.16 : 235,300.14 = 57,006.72 : x
2. Step 2: Convert to fraction form
   156,916.16/235,300.14 = 57,006.72/x
3. Step 3: Cross multiply
   156,916.16x = 235,300.14 × 57,006.72
4. Step 4: Simplify right side
   156,916.16x = 13,413,689,196.94
5. Step 5: Solve for x
   x = 13,413,689,196.94/156,916.16
6. Step 6: Final answer
   x = 85,483.16