Finding the Fourth Proportional to 78,348.72, 108,119.16 and 42,538.08

Step by Step Solution

1. Step 1: Write the proportion equation
   78,348.72 : 108,119.16 = 42,538.08 : x
2. Step 2: Convert to fraction form
   78,348.72/108,119.16 = 42,538.08/x
3. Step 3: Cross multiply
   78,348.72x = 108,119.16 × 42,538.08
4. Step 4: Simplify right side
   78,348.72x = 4,599,181,477.61
5. Step 5: Solve for x
   x = 4,599,181,477.61/78,348.72
6. Step 6: Final answer
   x = 58,701.42