Finding the Fourth Proportional to 78,045.32, 107,702.42 and 42,235.32

Step by Step Solution

1. Step 1: Write the proportion equation
   78,045.32 : 107,702.42 = 42,235.32 : x
2. Step 2: Convert to fraction form
   78,045.32/107,702.42 = 42,235.32/x
3. Step 3: Cross multiply
   78,045.32x = 107,702.42 × 42,235.32
4. Step 4: Simplify right side
   78,045.32x = 4,548,846,173.47
5. Step 5: Solve for x
   x = 4,548,846,173.47/78,045.32
6. Step 6: Final answer
   x = 58,284.68