Finding the Fourth Proportional to 78,061.08, 107,724.44 and 42,251.40

Step by Step Solution

1. Step 1: Write the proportion equation
   78,061.08 : 107,724.44 = 42,251.40 : x
2. Step 2: Convert to fraction form
   78,061.08/107,724.44 = 42,251.40/x
3. Step 3: Cross multiply
   78,061.08x = 107,724.44 × 42,251.40
4. Step 4: Simplify right side
   78,061.08x = 4,551,508,404.22
5. Step 5: Solve for x
   x = 4,551,508,404.22/78,061.08
6. Step 6: Final answer
   x = 58,307.01