Finding the Fourth Proportional to 156,465.72, 234,637.17 and 55,242.18

Step by Step Solution

1. Step 1: Write the proportion equation
   156,465.72 : 234,637.17 = 55,242.18 : x
2. Step 2: Convert to fraction form
   156,465.72/234,637.17 = 55,242.18/x
3. Step 3: Cross multiply
   156,465.72x = 234,637.17 × 55,242.18
4. Step 4: Simplify right side
   156,465.72x = 12,961,868,572.67
5. Step 5: Solve for x
   x = 12,961,868,572.67/156,465.72
6. Step 6: Final answer
   x = 82,841.59