Finding the Fourth Proportional to 112,565,500.20, 155,128,087.98 and 90,213,096.60

Step by Step Solution

1. Step 1: Write the proportion equation
   112,565,500.20 : 155,128,087.98 = 90,213,096.60 : x
2. Step 2: Convert to fraction form
   112,565,500.20/155,128,087.98 = 90,213,096.60/x
3. Step 3: Cross multiply
   112,565,500.20x = 155,128,087.98 × 90,213,096.60
4. Step 4: Simplify right side
   112,565,500.20x = 13,994,585,186,313,036
5. Step 5: Solve for x
   x = 13,994,585,186,313,036/112,565,500.20
6. Step 6: Final answer
   x = 124,323,928.39