Finding the Fourth Proportional to 138,185.39, 207,106.74 and 98,140.52

Step by Step Solution

1. Step 1: Write the proportion equation
   138,185.39 : 207,106.74 = 98,140.52 : x
2. Step 2: Convert to fraction form
   138,185.39/207,106.74 = 98,140.52/x
3. Step 3: Cross multiply
   138,185.39x = 207,106.74 × 98,140.52
4. Step 4: Simplify right side
   138,185.39x = 20,325,562,123.57
5. Step 5: Solve for x
   x = 20,325,562,123.57/138,185.39
6. Step 6: Final answer
   x = 147,089.09