Finding the Fourth Proportional to 81,388.16, 112,054.56 and 63,460.16

Step by Step Solution

1. Step 1: Write the proportion equation
   81,388.16 : 112,054.56 = 63,460.16 : x
2. Step 2: Convert to fraction form
   81,388.16/112,054.56 = 63,460.16/x
3. Step 3: Cross multiply
   81,388.16x = 112,054.56 × 63,460.16
4. Step 4: Simplify right side
   81,388.16x = 7,111,000,306.33
5. Step 5: Solve for x
   x = 7,111,000,306.33/81,388.16
6. Step 6: Final answer
   x = 87,371.43