Finding the Fourth Proportional to 99,156,662.40, 136,839,517.04 and 55,105,517.92

Step by Step Solution

1. Step 1: Write the proportion equation
   99,156,662.40 : 136,839,517.04 = 55,105,517.92 : x
2. Step 2: Convert to fraction form
   99,156,662.40/136,839,517.04 = 55,105,517.92/x
3. Step 3: Cross multiply
   99,156,662.40x = 136,839,517.04 × 55,105,517.92
4. Step 4: Simplify right side
   99,156,662.40x = 7,540,612,458,411,865
5. Step 5: Solve for x
   x = 7,540,612,458,411,865/99,156,662.40
6. Step 6: Final answer
   x = 76,047,461.42