Finding the Fourth Proportional to 138,016.56, 207,068.60 and 49,268.16

Step by Step Solution

1. Step 1: Write the proportion equation
   138,016.56 : 207,068.60 = 49,268.16 : x
2. Step 2: Convert to fraction form
   138,016.56/207,068.60 = 49,268.16/x
3. Step 3: Cross multiply
   138,016.56x = 207,068.60 × 49,268.16
4. Step 4: Simplify right side
   138,016.56x = 10,201,888,915.78
5. Step 5: Solve for x
   x = 10,201,888,915.78/138,016.56
6. Step 6: Final answer
   x = 73,917.86