Finding the Fourth Proportional to 216,978.86, 325,238.65 and 98,733.24

Step by Step Solution

1. Step 1: Write the proportion equation
   216,978.86 : 325,238.65 = 98,733.24 : x
2. Step 2: Convert to fraction form
   216,978.86/325,238.65 = 98,733.24/x
3. Step 3: Cross multiply
   216,978.86x = 325,238.65 × 98,733.24
4. Step 4: Simplify right side
   216,978.86x = 32,111,865,687.73
5. Step 5: Solve for x
   x = 32,111,865,687.73/216,978.86
6. Step 6: Final answer
   x = 147,995.37