Finding the Fourth Proportional to 68,672.50, 103,075.18 and 33,158.72

Step by Step Solution

1. Step 1: Write the proportion equation
   68,672.50 : 103,075.18 = 33,158.72 : x
2. Step 2: Convert to fraction form
   68,672.50/103,075.18 = 33,158.72/x
3. Step 3: Cross multiply
   68,672.50x = 103,075.18 × 33,158.72
4. Step 4: Simplify right side
   68,672.50x = 3,417,841,032.57
5. Step 5: Solve for x
   x = 3,417,841,032.57/68,672.50
6. Step 6: Final answer
   x = 49,770.16