Finding the Fourth Proportional to 71,002.18, 106,401.77 and 52,134.18

Step by Step Solution

1. Step 1: Write the proportion equation
   71,002.18 : 106,401.77 = 52,134.18 : x
2. Step 2: Convert to fraction form
   71,002.18/106,401.77 = 52,134.18/x
3. Step 3: Cross multiply
   71,002.18x = 106,401.77 × 52,134.18
4. Step 4: Simplify right side
   71,002.18x = 5,547,168,565.32
5. Step 5: Solve for x
   x = 5,547,168,565.32/71,002.18
6. Step 6: Final answer
   x = 78,126.74