Finding the Fourth Proportional to 111,488.16, 153,853.76 and 63,742.51

Step by Step Solution

1. Step 1: Write the proportion equation
   111,488.16 : 153,853.76 = 63,742.51 : x
2. Step 2: Convert to fraction form
   111,488.16/153,853.76 = 63,742.51/x
3. Step 3: Cross multiply
   111,488.16x = 153,853.76 × 63,742.51
4. Step 4: Simplify right side
   111,488.16x = 9,807,024,610.06
5. Step 5: Solve for x
   x = 9,807,024,610.06/111,488.16
6. Step 6: Final answer
   x = 87,964.72