Finding the Fourth Proportional to 156,080.65, 215,401.06 and 88,109.14

Step by Step Solution

1. Step 1: Write the proportion equation
   156,080.65 : 215,401.06 = 88,109.14 : x
2. Step 2: Convert to fraction form
   156,080.65/215,401.06 = 88,109.14/x
3. Step 3: Cross multiply
   156,080.65x = 215,401.06 × 88,109.14
4. Step 4: Simplify right side
   156,080.65x = 18,978,802,151.69
5. Step 5: Solve for x
   x = 18,978,802,151.69/156,080.65
6. Step 6: Final answer
   x = 121,596.12