Finding the Fourth Proportional to 102,028.24, 152,941.88 and 42,880.72

Step by Step Solution

1. Step 1: Write the proportion equation
   102,028.24 : 152,941.88 = 42,880.72 : x
2. Step 2: Convert to fraction form
   102,028.24/152,941.88 = 42,880.72/x
3. Step 3: Cross multiply
   102,028.24x = 152,941.88 × 42,880.72
4. Step 4: Simplify right side
   102,028.24x = 6,558,257,932.55
5. Step 5: Solve for x
   x = 6,558,257,932.55/102,028.24
6. Step 6: Final answer
   x = 64,278.85