Finding the Fourth Proportional to 78,033.31, 107,685.62 and 42,223.95

Step by Step Solution

1. Step 1: Write the proportion equation
   78,033.31 : 107,685.62 = 42,223.95 : x
2. Step 2: Convert to fraction form
   78,033.31/107,685.62 = 42,223.95/x
3. Step 3: Cross multiply
   78,033.31x = 107,685.62 × 42,223.95
4. Step 4: Simplify right side
   78,033.31x = 4,546,912,181.82
5. Step 5: Solve for x
   x = 4,546,912,181.82/78,033.31
6. Step 6: Final answer
   x = 58,268.86