Finding the Fourth Proportional to 78,641.67, 117,961.79 and 31,883.43

Step by Step Solution

1. Step 1: Write the proportion equation
   78,641.67 : 117,961.79 = 31,883.43 : x
2. Step 2: Convert to fraction form
   78,641.67/117,961.79 = 31,883.43/x
3. Step 3: Cross multiply
   78,641.67x = 117,961.79 × 31,883.43
4. Step 4: Simplify right side
   78,641.67x = 3,761,026,314.72
5. Step 5: Solve for x
   x = 3,761,026,314.72/78,641.67
6. Step 6: Final answer
   x = 47,824.85