Finding the Fourth Proportional to 78,274.74, 108,019.18 and 42,464.75

Step by Step Solution

1. Step 1: Write the proportion equation
   78,274.74 : 108,019.18 = 42,464.75 : x
2. Step 2: Convert to fraction form
   78,274.74/108,019.18 = 42,464.75/x
3. Step 3: Cross multiply
   78,274.74x = 108,019.18 × 42,464.75
4. Step 4: Simplify right side
   78,274.74x = 4,587,006,933.81
5. Step 5: Solve for x
   x = 4,587,006,933.81/78,274.74
6. Step 6: Final answer
   x = 58,601.37