Finding the Fourth Proportional to 156,628.08, 216,144.72 and 89,573.04

Step by Step Solution

1. Step 1: Write the proportion equation
   156,628.08 : 216,144.72 = 89,573.04 : x
2. Step 2: Convert to fraction form
   156,628.08/216,144.72 = 89,573.04/x
3. Step 3: Cross multiply
   156,628.08x = 216,144.72 × 89,573.04
4. Step 4: Simplify right side
   156,628.08x = 19,360,739,650.35
5. Step 5: Solve for x
   x = 19,360,739,650.35/156,628.08
6. Step 6: Final answer
   x = 123,609.63