Finding the Fourth Proportional to 71,423, 107,139.46 and 29,870

Step by Step Solution

1. Step 1: Write the proportion equation
   71,423 : 107,139.46 = 29,870 : x
2. Step 2: Convert to fraction form
   71,423/107,139.46 = 29,870/x
3. Step 3: Cross multiply
   71,423x = 107,139.46 × 29,870
4. Step 4: Simplify right side
   71,423x = 3,200,255,670.20
5. Step 5: Solve for x
   x = 3,200,255,670.20/71,423
6. Step 6: Final answer
   x = 44,807.07