Finding the Fourth Proportional to 112,878.28, 169,098.72 and 60,215.32

Step by Step Solution

1. Step 1: Write the proportion equation
   112,878.28 : 169,098.72 = 60,215.32 : x
2. Step 2: Convert to fraction form
   112,878.28/169,098.72 = 60,215.32/x
3. Step 3: Cross multiply
   112,878.28x = 169,098.72 × 60,215.32
4. Step 4: Simplify right side
   112,878.28x = 10,182,333,536.39
5. Step 5: Solve for x
   x = 10,182,333,536.39/112,878.28
6. Step 6: Final answer
   x = 90,206.31