Finding the Fourth Proportional to 111,251.49, 153,523.89 and 65,310.39

Step by Step Solution

1. Step 1: Write the proportion equation
   111,251.49 : 153,523.89 = 65,310.39 : x
2. Step 2: Convert to fraction form
   111,251.49/153,523.89 = 65,310.39/x
3. Step 3: Cross multiply
   111,251.49x = 153,523.89 × 65,310.39
4. Step 4: Simplify right side
   111,251.49x = 10,026,705,130.22
5. Step 5: Solve for x
   x = 10,026,705,130.22/111,251.49
6. Step 6: Final answer
   x = 90,126.48