Finding the Fourth Proportional to 76,401.33, 105,432.19 and 42,407.83

Step by Step Solution

1. Step 1: Write the proportion equation
   76,401.33 : 105,432.19 = 42,407.83 : x
2. Step 2: Convert to fraction form
   76,401.33/105,432.19 = 42,407.83/x
3. Step 3: Cross multiply
   76,401.33x = 105,432.19 × 42,407.83
4. Step 4: Simplify right side
   76,401.33x = 4,471,150,390.05
5. Step 5: Solve for x
   x = 4,471,150,390.05/76,401.33
6. Step 6: Final answer
   x = 58,521.89