Finding the Fourth Proportional to 138,298.50, 207,475.02 and 49,528.17

Step by Step Solution

1. Step 1: Write the proportion equation
   138,298.50 : 207,475.02 = 49,528.17 : x
2. Step 2: Convert to fraction form
   138,298.50/207,475.02 = 49,528.17/x
3. Step 3: Cross multiply
   138,298.50x = 207,475.02 × 49,528.17
4. Step 4: Simplify right side
   138,298.50x = 10,275,858,061.31
5. Step 5: Solve for x
   x = 10,275,858,061.31/138,298.50
6. Step 6: Final answer
   x = 74,302.02