Finding the Fourth Proportional to 138,300.61, 207,487.83 and 49,563.09

Step by Step Solution

1. Step 1: Write the proportion equation
   138,300.61 : 207,487.83 = 49,563.09 : x
2. Step 2: Convert to fraction form
   138,300.61/207,487.83 = 49,563.09/x
3. Step 3: Cross multiply
   138,300.61x = 207,487.83 × 49,563.09
4. Step 4: Simplify right side
   138,300.61x = 10,283,737,992.19
5. Step 5: Solve for x
   x = 10,283,737,992.19/138,300.61
6. Step 6: Final answer
   x = 74,357.86