Finding the Fourth Proportional to 155,892.32, 215,136.24 and 88,820

Step by Step Solution

1. Step 1: Write the proportion equation
   155,892.32 : 215,136.24 = 88,820 : x
2. Step 2: Convert to fraction form
   155,892.32/215,136.24 = 88,820/x
3. Step 3: Cross multiply
   155,892.32x = 215,136.24 × 88,820
4. Step 4: Simplify right side
   155,892.32x = 19,108,400,836.80
5. Step 5: Solve for x
   x = 19,108,400,836.80/155,892.32
6. Step 6: Final answer
   x = 122,574.36