Finding the Fourth Proportional to 71,859, 99,165.42 and 42,051

Step by Step Solution

1. Step 1: Write the proportion equation
   71,859 : 99,165.42 = 42,051 : x
2. Step 2: Convert to fraction form
   71,859/99,165.42 = 42,051/x
3. Step 3: Cross multiply
   71,859x = 99,165.42 × 42,051
4. Step 4: Simplify right side
   71,859x = 4,170,005,076.42
5. Step 5: Solve for x
   x = 4,170,005,076.42/71,859
6. Step 6: Final answer
   x = 58,030.38