Finding the Fourth Proportional to 78,032.16, 107,683.61 and 42,221.39

Step by Step Solution

1. Step 1: Write the proportion equation
   78,032.16 : 107,683.61 = 42,221.39 : x
2. Step 2: Convert to fraction form
   78,032.16/107,683.61 = 42,221.39/x
3. Step 3: Cross multiply
   78,032.16x = 107,683.61 × 42,221.39
4. Step 4: Simplify right side
   78,032.16x = 4,546,550,944.89
5. Step 5: Solve for x
   x = 4,546,550,944.89/78,032.16
6. Step 6: Final answer
   x = 58,265.09