Finding the Fourth Proportional to 78,108.52, 107,788.90 and 42,297.64

Step by Step Solution

1. Step 1: Write the proportion equation
   78,108.52 : 107,788.90 = 42,297.64 : x
2. Step 2: Convert to fraction form
   78,108.52/107,788.90 = 42,297.64/x
3. Step 3: Cross multiply
   78,108.52x = 107,788.90 × 42,297.64
4. Step 4: Simplify right side
   78,108.52x = 4,559,216,088.20
5. Step 5: Solve for x
   x = 4,559,216,088.20/78,108.52
6. Step 6: Final answer
   x = 58,370.28