Finding the Fourth Proportional to 214,498.10, 321,856.50 and 88,235.30

Step by Step Solution

1. Step 1: Write the proportion equation
   214,498.10 : 321,856.50 = 88,235.30 : x
2. Step 2: Convert to fraction form
   214,498.10/321,856.50 = 88,235.30/x
3. Step 3: Cross multiply
   214,498.10x = 321,856.50 × 88,235.30
4. Step 4: Simplify right side
   214,498.10x = 28,399,104,834.45
5. Step 5: Solve for x
   x = 28,399,104,834.45/214,498.10
6. Step 6: Final answer
   x = 132,397.93