Finding the Fourth Proportional to 78,058.02, 107,720.05 and 42,248.02

Step by Step Solution

1. Step 1: Write the proportion equation
   78,058.02 : 107,720.05 = 42,248.02 : x
2. Step 2: Convert to fraction form
   78,058.02/107,720.05 = 42,248.02/x
3. Step 3: Cross multiply
   78,058.02x = 107,720.05 × 42,248.02
4. Step 4: Simplify right side
   78,058.02x = 4,550,958,826.80
5. Step 5: Solve for x
   x = 4,550,958,826.80/78,058.02
6. Step 6: Final answer
   x = 58,302.26