Finding the Fourth Proportional to 78,033.58, 107,686.32 and 42,223.61

Step by Step Solution

1. Step 1: Write the proportion equation
   78,033.58 : 107,686.32 = 42,223.61 : x
2. Step 2: Convert to fraction form
   78,033.58/107,686.32 = 42,223.61/x
3. Step 3: Cross multiply
   78,033.58x = 107,686.32 × 42,223.61
4. Step 4: Simplify right side
   78,033.58x = 4,546,905,178.02
5. Step 5: Solve for x
   x = 4,546,905,178.02/78,033.58
6. Step 6: Final answer
   x = 58,268.57