Finding the Fourth Proportional to 99,156,609.10, 136,839,443.53 and 55,105,464.61

Step by Step Solution

1. Step 1: Write the proportion equation
   99,156,609.10 : 136,839,443.53 = 55,105,464.61 : x
2. Step 2: Convert to fraction form
   99,156,609.10/136,839,443.53 = 55,105,464.61/x
3. Step 3: Cross multiply
   99,156,609.10x = 136,839,443.53 × 55,105,464.61
4. Step 4: Simplify right side
   99,156,609.10x = 7,540,601,112,694,508
5. Step 5: Solve for x
   x = 7,540,601,112,694,508/99,156,609.10
6. Step 6: Final answer
   x = 76,047,387.88