Finding the Fourth Proportional to 156,629.91, 216,150.06 and 85,010.03

Step by Step Solution

1. Step 1: Write the proportion equation
   156,629.91 : 216,150.06 = 85,010.03 : x
2. Step 2: Convert to fraction form
   156,629.91/216,150.06 = 85,010.03/x
3. Step 3: Cross multiply
   156,629.91x = 216,150.06 × 85,010.03
4. Step 4: Simplify right side
   156,629.91x = 18,374,923,085.10
5. Step 5: Solve for x
   x = 18,374,923,085.10/156,629.91
6. Step 6: Final answer
   x = 117,314.27