Finding the Fourth Proportional to 156,670.55, 216,182.54 and 89,589.59

Step by Step Solution

1. Step 1: Write the proportion equation
   156,670.55 : 216,182.54 = 89,589.59 : x
2. Step 2: Convert to fraction form
   156,670.55/216,182.54 = 89,589.59/x
3. Step 3: Cross multiply
   156,670.55x = 216,182.54 × 89,589.59
4. Step 4: Simplify right side
   156,670.55x = 19,367,705,123.76
5. Step 5: Solve for x
   x = 19,367,705,123.76/156,670.55
6. Step 6: Final answer
   x = 123,620.59