Finding the Fourth Proportional to 89,279,242.32, 123,218,801.12 and 54,492,147.78

Step by Step Solution

1. Step 1: Write the proportion equation
   89,279,242.32 : 123,218,801.12 = 54,492,147.78 : x
2. Step 2: Convert to fraction form
   89,279,242.32/123,218,801.12 = 54,492,147.78/x
3. Step 3: Cross multiply
   89,279,242.32x = 123,218,801.12 × 54,492,147.78
4. Step 4: Simplify right side
   89,279,242.32x = 6,714,457,119,905,470
5. Step 5: Solve for x
   x = 6,714,457,119,905,470/89,279,242.32
6. Step 6: Final answer
   x = 75,207,371.23