Finding the Fourth Proportional to 67,477.50, 101,147.13 and 28,057.50

Step by Step Solution

1. Step 1: Write the proportion equation
   67,477.50 : 101,147.13 = 28,057.50 : x
2. Step 2: Convert to fraction form
   67,477.50/101,147.13 = 28,057.50/x
3. Step 3: Cross multiply
   67,477.50x = 101,147.13 × 28,057.50
4. Step 4: Simplify right side
   67,477.50x = 2,837,935,599.98
5. Step 5: Solve for x
   x = 2,837,935,599.98/67,477.50
6. Step 6: Final answer
   x = 42,057.51