Finding the Fourth Proportional to 99,311.75, 137,062.82 and 56,298.24

Step by Step Solution

1. Step 1: Write the proportion equation
   99,311.75 : 137,062.82 = 56,298.24 : x
2. Step 2: Convert to fraction form
   99,311.75/137,062.82 = 56,298.24/x
3. Step 3: Cross multiply
   99,311.75x = 137,062.82 × 56,298.24
4. Step 4: Simplify right side
   99,311.75x = 7,716,395,597.01
5. Step 5: Solve for x
   x = 7,716,395,597.01/99,311.75
6. Step 6: Final answer
   x = 77,698.72