Finding the Fourth Proportional to 99,862,687.32, 137,814,764.56 and 55,809,684.88

Step by Step Solution

1. Step 1: Write the proportion equation
   99,862,687.32 : 137,814,764.56 = 55,809,684.88 : x
2. Step 2: Convert to fraction form
   99,862,687.32/137,814,764.56 = 55,809,684.88/x
3. Step 3: Cross multiply
   99,862,687.32x = 137,814,764.56 × 55,809,684.88
4. Step 4: Simplify right side
   99,862,687.32x = 7,691,398,581,904,992
5. Step 5: Solve for x
   x = 7,691,398,581,904,992/99,862,687.32
6. Step 6: Final answer
   x = 77,019,743.69