Finding the Fourth Proportional to 112,870.28, 155,729.46 and 88,922.62

Step by Step Solution

1. Step 1: Write the proportion equation
   112,870.28 : 155,729.46 = 88,922.62 : x
2. Step 2: Convert to fraction form
   112,870.28/155,729.46 = 88,922.62/x
3. Step 3: Cross multiply
   112,870.28x = 155,729.46 × 88,922.62
4. Step 4: Simplify right side
   112,870.28x = 13,847,871,594.39
5. Step 5: Solve for x
   x = 13,847,871,594.39/112,870.28
6. Step 6: Final answer
   x = 122,688.38