Finding the Fourth Proportional to 156,888.56, 216,519 and 89,824.88

Step by Step Solution

1. Step 1: Write the proportion equation
   156,888.56 : 216,519 = 89,824.88 : x
2. Step 2: Convert to fraction form
   156,888.56/216,519 = 89,824.88/x
3. Step 3: Cross multiply
   156,888.56x = 216,519 × 89,824.88
4. Step 4: Simplify right side
   156,888.56x = 19,448,793,192.72
5. Step 5: Solve for x
   x = 19,448,793,192.72/156,888.56
6. Step 6: Final answer
   x = 123,965.66