Finding the Fourth Proportional to 112,957.56, 169,326.18 and 53,777.34

Step by Step Solution

1. Step 1: Write the proportion equation
   112,957.56 : 169,326.18 = 53,777.34 : x
2. Step 2: Convert to fraction form
   112,957.56/169,326.18 = 53,777.34/x
3. Step 3: Cross multiply
   112,957.56x = 169,326.18 × 53,777.34
4. Step 4: Simplify right side
   112,957.56x = 9,105,911,552.76
5. Step 5: Solve for x
   x = 9,105,911,552.76/112,957.56
6. Step 6: Final answer
   x = 80,613.56