Finding the Fourth Proportional to 112,775.90, 155,647.32 and 65,019.92

Step by Step Solution

1. Step 1: Write the proportion equation
   112,775.90 : 155,647.32 = 65,019.92 : x
2. Step 2: Convert to fraction form
   112,775.90/155,647.32 = 65,019.92/x
3. Step 3: Cross multiply
   112,775.90x = 155,647.32 × 65,019.92
4. Step 4: Simplify right side
   112,775.90x = 10,120,176,294.61
5. Step 5: Solve for x
   x = 10,120,176,294.61/112,775.90
6. Step 6: Final answer
   x = 89,737.05