Finding the Fourth Proportional to 71,525.04, 107,285.94 and 42,129.34

Step by Step Solution

1. Step 1: Write the proportion equation
   71,525.04 : 107,285.94 = 42,129.34 : x
2. Step 2: Convert to fraction form
   71,525.04/107,285.94 = 42,129.34/x
3. Step 3: Cross multiply
   71,525.04x = 107,285.94 × 42,129.34
4. Step 4: Simplify right side
   71,525.04x = 4,519,885,843.48
5. Step 5: Solve for x
   x = 4,519,885,843.48/71,525.04
6. Step 6: Final answer
   x = 63,193.06