Finding the Fourth Proportional to 78,157.71, 117,302.18 and 33,818.31

Step by Step Solution

1. Step 1: Write the proportion equation
   78,157.71 : 117,302.18 = 33,818.31 : x
2. Step 2: Convert to fraction form
   78,157.71/117,302.18 = 33,818.31/x
3. Step 3: Cross multiply
   78,157.71x = 117,302.18 × 33,818.31
4. Step 4: Simplify right side
   78,157.71x = 3,966,961,317.82
5. Step 5: Solve for x
   x = 3,966,961,317.82/78,157.71
6. Step 6: Final answer
   x = 50,755.85