Finding the Fourth Proportional to 78,493.24, 117,742.56 and 31,117.29

Step by Step Solution

1. Step 1: Write the proportion equation
   78,493.24 : 117,742.56 = 31,117.29 : x
2. Step 2: Convert to fraction form
   78,493.24/117,742.56 = 31,117.29/x
3. Step 3: Cross multiply
   78,493.24x = 117,742.56 × 31,117.29
4. Step 4: Simplify right side
   78,493.24x = 3,663,829,384.86
5. Step 5: Solve for x
   x = 3,663,829,384.86/78,493.24
6. Step 6: Final answer
   x = 46,677.01