Finding the Fourth Proportional to 52,280.28, 72,137.28 and 31,064.76

Step by Step Solution

1. Step 1: Write the proportion equation
   52,280.28 : 72,137.28 = 31,064.76 : x
2. Step 2: Convert to fraction form
   52,280.28/72,137.28 = 31,064.76/x
3. Step 3: Cross multiply
   52,280.28x = 72,137.28 × 31,064.76
4. Step 4: Simplify right side
   52,280.28x = 2,240,927,290.25
5. Step 5: Solve for x
   x = 2,240,927,290.25/52,280.28
6. Step 6: Final answer
   x = 42,863.72