Finding the Fourth Proportional to 131,061.62, 180,888.32 and 77,342.83

Step by Step Solution

1. Step 1: Write the proportion equation
   131,061.62 : 180,888.32 = 77,342.83 : x
2. Step 2: Convert to fraction form
   131,061.62/180,888.32 = 77,342.83/x
3. Step 3: Cross multiply
   131,061.62x = 180,888.32 × 77,342.83
4. Step 4: Simplify right side
   131,061.62x = 13,990,414,582.75
5. Step 5: Solve for x
   x = 13,990,414,582.75/131,061.62
6. Step 6: Final answer
   x = 106,746.85