Finding the Fourth Proportional to 112,870.15, 155,729.29 and 88,922.50

Step by Step Solution

1. Step 1: Write the proportion equation
   112,870.15 : 155,729.29 = 88,922.50 : x
2. Step 2: Convert to fraction form
   112,870.15/155,729.29 = 88,922.50/x
3. Step 3: Cross multiply
   112,870.15x = 155,729.29 × 88,922.50
4. Step 4: Simplify right side
   112,870.15x = 13,847,836,566.77
5. Step 5: Solve for x
   x = 13,847,836,566.77/112,870.15
6. Step 6: Final answer
   x = 122,688.21