Finding the Fourth Proportional to 78,397.46, 117,645.50 and 33,418.77

Step by Step Solution

1. Step 1: Write the proportion equation
   78,397.46 : 117,645.50 = 33,418.77 : x
2. Step 2: Convert to fraction form
   78,397.46/117,645.50 = 33,418.77/x
3. Step 3: Cross multiply
   78,397.46x = 117,645.50 × 33,418.77
4. Step 4: Simplify right side
   78,397.46x = 3,931,567,906.04
5. Step 5: Solve for x
   x = 3,931,567,906.04/78,397.46
6. Step 6: Final answer
   x = 50,149.17