Finding the Fourth Proportional to 71,962.50, 99,308.25 and 42,154.50

Step by Step Solution

1. Step 1: Write the proportion equation
   71,962.50 : 99,308.25 = 42,154.50 : x
2. Step 2: Convert to fraction form
   71,962.50/99,308.25 = 42,154.50/x
3. Step 3: Cross multiply
   71,962.50x = 99,308.25 × 42,154.50
4. Step 4: Simplify right side
   71,962.50x = 4,186,289,624.63
5. Step 5: Solve for x
   x = 4,186,289,624.63/71,962.50
6. Step 6: Final answer
   x = 58,173.21