Finding the Fourth Proportional to 215,009.31, 322,602.81 and 108,336.25

Step by Step Solution

1. Step 1: Write the proportion equation
   215,009.31 : 322,602.81 = 108,336.25 : x
2. Step 2: Convert to fraction form
   215,009.31/322,602.81 = 108,336.25/x
3. Step 3: Cross multiply
   215,009.31x = 322,602.81 × 108,336.25
4. Step 4: Simplify right side
   215,009.31x = 34,949,578,674.86
5. Step 5: Solve for x
   x = 34,949,578,674.86/215,009.31
6. Step 6: Final answer
   x = 162,549.14