Finding the Fourth Proportional to 78,081.96, 107,741.52 and 47,439.12

Step by Step Solution

1. Step 1: Write the proportion equation
   78,081.96 : 107,741.52 = 47,439.12 : x
2. Step 2: Convert to fraction form
   78,081.96/107,741.52 = 47,439.12/x
3. Step 3: Cross multiply
   78,081.96x = 107,741.52 × 47,439.12
4. Step 4: Simplify right side
   78,081.96x = 5,111,162,896.26
5. Step 5: Solve for x
   x = 5,111,162,896.26/78,081.96
6. Step 6: Final answer
   x = 65,458.95