Finding the Fourth Proportional to 78,548.84, 108,399.34 and 42,740.81

Step by Step Solution

1. Step 1: Write the proportion equation
   78,548.84 : 108,399.34 = 42,740.81 : x
2. Step 2: Convert to fraction form
   78,548.84/108,399.34 = 42,740.81/x
3. Step 3: Cross multiply
   78,548.84x = 108,399.34 × 42,740.81
4. Step 4: Simplify right side
   78,548.84x = 4,633,076,002.53
5. Step 5: Solve for x
   x = 4,633,076,002.53/78,548.84
6. Step 6: Final answer
   x = 58,983.38