Finding the Fourth Proportional to 112,402.42, 168,458.28 and 84,100.42

Step by Step Solution

1. Step 1: Write the proportion equation
   112,402.42 : 168,458.28 = 84,100.42 : x
2. Step 2: Convert to fraction form
   112,402.42/168,458.28 = 84,100.42/x
3. Step 3: Cross multiply
   112,402.42x = 168,458.28 × 84,100.42
4. Step 4: Simplify right side
   112,402.42x = 14,167,412,100.48
5. Step 5: Solve for x
   x = 14,167,412,100.48/112,402.42
6. Step 6: Final answer
   x = 126,041.88