Finding the Fourth Proportional to 122,742.15, 169,381.50 and 71,061.43

Step by Step Solution

1. Step 1: Write the proportion equation
   122,742.15 : 169,381.50 = 71,061.43 : x
2. Step 2: Convert to fraction form
   122,742.15/169,381.50 = 71,061.43/x
3. Step 3: Cross multiply
   122,742.15x = 169,381.50 × 71,061.43
4. Step 4: Simplify right side
   122,742.15x = 12,036,490,758.64
5. Step 5: Solve for x
   x = 12,036,490,758.64/122,742.15
6. Step 6: Final answer
   x = 98,063.23