Finding the Fourth Proportional to 42,485.76, 58,204.80 and 40,907.52

Step by Step Solution

1. Step 1: Write the proportion equation
   42,485.76 : 58,204.80 = 40,907.52 : x
2. Step 2: Convert to fraction form
   42,485.76/58,204.80 = 40,907.52/x
3. Step 3: Cross multiply
   42,485.76x = 58,204.80 × 40,907.52
4. Step 4: Simplify right side
   42,485.76x = 2,381,014,020.10
5. Step 5: Solve for x
   x = 2,381,014,020.10/42,485.76
6. Step 6: Final answer
   x = 56,042.64