Finding the Fourth Proportional to 78,139.04, 107,831.61 and 42,329.01

Step by Step Solution

1. Step 1: Write the proportion equation
   78,139.04 : 107,831.61 = 42,329.01 : x
2. Step 2: Convert to fraction form
   78,139.04/107,831.61 = 42,329.01/x
3. Step 3: Cross multiply
   78,139.04x = 107,831.61 × 42,329.01
4. Step 4: Simplify right side
   78,139.04x = 4,564,405,214.87
5. Step 5: Solve for x
   x = 4,564,405,214.87/78,139.04
6. Step 6: Final answer
   x = 58,413.89