Finding the Fourth Proportional to 100,747, 138,146.72 and 98,122.60

Step by Step Solution

1. Step 1: Write the proportion equation
   100,747 : 138,146.72 = 98,122.60 : x
2. Step 2: Convert to fraction form
   100,747/138,146.72 = 98,122.60/x
3. Step 3: Cross multiply
   100,747x = 138,146.72 × 98,122.60
4. Step 4: Simplify right side
   100,747x = 13,555,315,347.87
5. Step 5: Solve for x
   x = 13,555,315,347.87/100,747
6. Step 6: Final answer
   x = 134,548.08