Finding the Fourth Proportional to 78,045.72, 107,703.37 and 42,235.73

Step by Step Solution

1. Step 1: Write the proportion equation
   78,045.72 : 107,703.37 = 42,235.73 : x
2. Step 2: Convert to fraction form
   78,045.72/107,703.37 = 42,235.73/x
3. Step 3: Cross multiply
   78,045.72x = 107,703.37 × 42,235.73
4. Step 4: Simplify right side
   78,045.72x = 4,548,929,916.89
5. Step 5: Solve for x
   x = 4,548,929,916.89/78,045.72
6. Step 6: Final answer
   x = 58,285.45