Finding the Fourth Proportional to 156,984.18, 216,619.83 and 89,008.98

Step by Step Solution

1. Step 1: Write the proportion equation
   156,984.18 : 216,619.83 = 89,008.98 : x
2. Step 2: Convert to fraction form
   156,984.18/216,619.83 = 89,008.98/x
3. Step 3: Cross multiply
   156,984.18x = 216,619.83 × 89,008.98
4. Step 4: Simplify right side
   156,984.18x = 19,281,110,116.07
5. Step 5: Solve for x
   x = 19,281,110,116.07/156,984.18
6. Step 6: Final answer
   x = 122,821.99