Finding the Fourth Proportional to 78,058.45, 107,720.96 and 42,248.47

Step by Step Solution

1. Step 1: Write the proportion equation
   78,058.45 : 107,720.96 = 42,248.47 : x
2. Step 2: Convert to fraction form
   78,058.45/107,720.96 = 42,248.47/x
3. Step 3: Cross multiply
   78,058.45x = 107,720.96 × 42,248.47
4. Step 4: Simplify right side
   78,058.45x = 4,551,045,535.69
5. Step 5: Solve for x
   x = 4,551,045,535.69/78,058.45
6. Step 6: Final answer
   x = 58,303.05