Finding the Fourth Proportional to 78,059.42, 107,724.61 and 47,838.91

Step by Step Solution

1. Step 1: Write the proportion equation
   78,059.42 : 107,724.61 = 47,838.91 : x
2. Step 2: Convert to fraction form
   78,059.42/107,724.61 = 47,838.91/x
3. Step 3: Cross multiply
   78,059.42x = 107,724.61 × 47,838.91
4. Step 4: Simplify right side
   78,059.42x = 5,153,427,264.35
5. Step 5: Solve for x
   x = 5,153,427,264.35/78,059.42
6. Step 6: Final answer
   x = 66,019.29