Finding the Fourth Proportional to 78,072.48, 117,130.52 and 31,358.16

Step by Step Solution

1. Step 1: Write the proportion equation
   78,072.48 : 117,130.52 = 31,358.16 : x
2. Step 2: Convert to fraction form
   78,072.48/117,130.52 = 31,358.16/x
3. Step 3: Cross multiply
   78,072.48x = 117,130.52 × 31,358.16
4. Step 4: Simplify right side
   78,072.48x = 3,672,997,587.04
5. Step 5: Solve for x
   x = 3,672,997,587.04/78,072.48
6. Step 6: Final answer
   x = 47,046.00