Finding the Fourth Proportional to 89,279,285.60, 123,218,860.90 and 54,492,191.10

Step by Step Solution

1. Step 1: Write the proportion equation
   89,279,285.60 : 123,218,860.90 = 54,492,191.10 : x
2. Step 2: Convert to fraction form
   89,279,285.60/123,218,860.90 = 54,492,191.10/x
3. Step 3: Cross multiply
   89,279,285.60x = 123,218,860.90 × 54,492,191.10
4. Step 4: Simplify right side
   89,279,285.60x = 6,714,465,715,287,118
5. Step 5: Solve for x
   x = 6,714,465,715,287,118/89,279,285.60
6. Step 6: Final answer
   x = 75,207,431.04