Finding the Fourth Proportional to 86,859.37, 130,116.25 and 42,356.17

Step by Step Solution

1. Step 1: Write the proportion equation
   86,859.37 : 130,116.25 = 42,356.17 : x
2. Step 2: Convert to fraction form
   86,859.37/130,116.25 = 42,356.17/x
3. Step 3: Cross multiply
   86,859.37x = 130,116.25 × 42,356.17
4. Step 4: Simplify right side
   86,859.37x = 5,511,226,004.76
5. Step 5: Solve for x
   x = 5,511,226,004.76/86,859.37
6. Step 6: Final answer
   x = 63,449.99