Finding the Fourth Proportional to 78,987.86, 118,481.76 and 31,624.26

Step by Step Solution

1. Step 1: Write the proportion equation
   78,987.86 : 118,481.76 = 31,624.26 : x
2. Step 2: Convert to fraction form
   78,987.86/118,481.76 = 31,624.26/x
3. Step 3: Cross multiply
   78,987.86x = 118,481.76 × 31,624.26
4. Step 4: Simplify right side
   78,987.86x = 3,746,897,983.50
5. Step 5: Solve for x
   x = 3,746,897,983.50/78,987.86
6. Step 6: Final answer
   x = 47,436.38