Finding the Fourth Proportional to 59,376, 81,939.42 and 40,512.72

Step by Step Solution

1. Step 1: Write the proportion equation
   59,376 : 81,939.42 = 40,512.72 : x
2. Step 2: Convert to fraction form
   59,376/81,939.42 = 40,512.72/x
3. Step 3: Cross multiply
   59,376x = 81,939.42 × 40,512.72
4. Step 4: Simplify right side
   59,376x = 3,319,588,779.42
5. Step 5: Solve for x
   x = 3,319,588,779.42/59,376
6. Step 6: Final answer
   x = 55,907.92