Finding the Fourth Proportional to 156,981.24, 216,629.30 and 89,004.42

Step by Step Solution

1. Step 1: Write the proportion equation
   156,981.24 : 216,629.30 = 89,004.42 : x
2. Step 2: Convert to fraction form
   156,981.24/216,629.30 = 89,004.42/x
3. Step 3: Cross multiply
   156,981.24x = 216,629.30 × 89,004.42
4. Step 4: Simplify right side
   156,981.24x = 19,280,965,424.02
5. Step 5: Solve for x
   x = 19,280,965,424.02/156,981.24
6. Step 6: Final answer
   x = 122,823.37