Finding the Fourth Proportional to 78,003.57, 107,644.83 and 42,193.47

Step by Step Solution

1. Step 1: Write the proportion equation
   78,003.57 : 107,644.83 = 42,193.47 : x
2. Step 2: Convert to fraction form
   78,003.57/107,644.83 = 42,193.47/x
3. Step 3: Cross multiply
   78,003.57x = 107,644.83 × 42,193.47
4. Step 4: Simplify right side
   78,003.57x = 4,541,908,905.26
5. Step 5: Solve for x
   x = 4,541,908,905.26/78,003.57
6. Step 6: Final answer
   x = 58,226.94