Finding the Fourth Proportional to 99,930.58, 137,808.88 and 65,423.82

Step by Step Solution

1. Step 1: Write the proportion equation
   99,930.58 : 137,808.88 = 65,423.82 : x
2. Step 2: Convert to fraction form
   99,930.58/137,808.88 = 65,423.82/x
3. Step 3: Cross multiply
   99,930.58x = 137,808.88 × 65,423.82
4. Step 4: Simplify right side
   99,930.58x = 9,015,983,359.52
5. Step 5: Solve for x
   x = 9,015,983,359.52/99,930.58
6. Step 6: Final answer
   x = 90,222.47