Finding the Fourth Proportional to 76,413.71, 105,445.62 and 42,419.51

Step by Step Solution

1. Step 1: Write the proportion equation
   76,413.71 : 105,445.62 = 42,419.51 : x
2. Step 2: Convert to fraction form
   76,413.71/105,445.62 = 42,419.51/x
3. Step 3: Cross multiply
   76,413.71x = 105,445.62 × 42,419.51
4. Step 4: Simplify right side
   76,413.71x = 4,472,951,004.82
5. Step 5: Solve for x
   x = 4,472,951,004.82/76,413.71
6. Step 6: Final answer
   x = 58,535.98