Finding the Fourth Proportional to 78,601.76, 108,467.72 and 42,791.12

Step by Step Solution

1. Step 1: Write the proportion equation
   78,601.76 : 108,467.72 = 42,791.12 : x
2. Step 2: Convert to fraction form
   78,601.76/108,467.72 = 42,791.12/x
3. Step 3: Cross multiply
   78,601.76x = 108,467.72 × 42,791.12
4. Step 4: Simplify right side
   78,601.76x = 4,641,455,222.65
5. Step 5: Solve for x
   x = 4,641,455,222.65/78,601.76
6. Step 6: Final answer
   x = 59,050.27