Finding the Fourth Proportional to 78,993.60, 118,490.38 and 31,630.02

Step by Step Solution

1. Step 1: Write the proportion equation
   78,993.60 : 118,490.38 = 31,630.02 : x
2. Step 2: Convert to fraction form
   78,993.60/118,490.38 = 31,630.02/x
3. Step 3: Cross multiply
   78,993.60x = 118,490.38 × 31,630.02
4. Step 4: Simplify right side
   78,993.60x = 3,747,853,089.21
5. Step 5: Solve for x
   x = 3,747,853,089.21/78,993.60
6. Step 6: Final answer
   x = 47,445.02