Finding the Fourth Proportional to 71,860, 99,166.80 and 42,052

Step by Step Solution

1. Step 1: Write the proportion equation
   71,860 : 99,166.80 = 42,052 : x
2. Step 2: Convert to fraction form
   71,860/99,166.80 = 42,052/x
3. Step 3: Cross multiply
   71,860x = 99,166.80 × 42,052
4. Step 4: Simplify right side
   71,860x = 4,170,162,273.60
5. Step 5: Solve for x
   x = 4,170,162,273.60/71,860
6. Step 6: Final answer
   x = 58,031.76