Finding the Fourth Proportional to 99,663.29, 137,591.30 and 69,080.82

Step by Step Solution

1. Step 1: Write the proportion equation
   99,663.29 : 137,591.30 = 69,080.82 : x
2. Step 2: Convert to fraction form
   99,663.29/137,591.30 = 69,080.82/x
3. Step 3: Cross multiply
   99,663.29x = 137,591.30 × 69,080.82
4. Step 4: Simplify right side
   99,663.29x = 9,504,919,483.46
5. Step 5: Solve for x
   x = 9,504,919,483.46/99,663.29
6. Step 6: Final answer
   x = 95,370.32