Finding the Fourth Proportional to 102,516.72, 153,779.71 and 31,434.17

Step by Step Solution

1. Step 1: Write the proportion equation
   102,516.72 : 153,779.71 = 31,434.17 : x
2. Step 2: Convert to fraction form
   102,516.72/153,779.71 = 31,434.17/x
3. Step 3: Cross multiply
   102,516.72x = 153,779.71 × 31,434.17
4. Step 4: Simplify right side
   102,516.72x = 4,833,937,546.69
5. Step 5: Solve for x
   x = 4,833,937,546.69/102,516.72
6. Step 6: Final answer
   x = 47,152.67