Finding the Fourth Proportional to 99,483.26, 137,410.17 and 72,215.82

Step by Step Solution

1. Step 1: Write the proportion equation
   99,483.26 : 137,410.17 = 72,215.82 : x
2. Step 2: Convert to fraction form
   99,483.26/137,410.17 = 72,215.82/x
3. Step 3: Cross multiply
   99,483.26x = 137,410.17 × 72,215.82
4. Step 4: Simplify right side
   99,483.26x = 9,923,188,238.29
5. Step 5: Solve for x
   x = 9,923,188,238.29/99,483.26
6. Step 6: Final answer
   x = 99,747.32