Finding the Fourth Proportional to 76,407.34, 105,440.46 and 42,413.84

Step by Step Solution

1. Step 1: Write the proportion equation
   76,407.34 : 105,440.46 = 42,413.84 : x
2. Step 2: Convert to fraction form
   76,407.34/105,440.46 = 42,413.84/x
3. Step 3: Cross multiply
   76,407.34x = 105,440.46 × 42,413.84
4. Step 4: Simplify right side
   76,407.34x = 4,472,134,799.97
5. Step 5: Solve for x
   x = 4,472,134,799.97/76,407.34
6. Step 6: Final answer
   x = 58,530.17