Finding the Fourth Proportional to 156,984.28, 216,631.71 and 89,005.82

Step by Step Solution

1. Step 1: Write the proportion equation
   156,984.28 : 216,631.71 = 89,005.82 : x
2. Step 2: Convert to fraction form
   156,984.28/216,631.71 = 89,005.82/x
3. Step 3: Cross multiply
   156,984.28x = 216,631.71 × 89,005.82
4. Step 4: Simplify right side
   156,984.28x = 19,281,484,101.20
5. Step 5: Solve for x
   x = 19,281,484,101.20/156,984.28
6. Step 6: Final answer
   x = 122,824.30