Finding the Fourth Proportional to 219,468.86, 329,341.69 and 86,331.82

Step by Step Solution

1. Step 1: Write the proportion equation
   219,468.86 : 329,341.69 = 86,331.82 : x
2. Step 2: Convert to fraction form
   219,468.86/329,341.69 = 86,331.82/x
3. Step 3: Cross multiply
   219,468.86x = 329,341.69 × 86,331.82
4. Step 4: Simplify right side
   219,468.86x = 28,432,667,499.58
5. Step 5: Solve for x
   x = 28,432,667,499.58/219,468.86
6. Step 6: Final answer
   x = 129,552.17