Finding the Fourth Proportional to 112,342.53, 154,961.49 and 85,426.02

Step by Step Solution

1. Step 1: Write the proportion equation
   112,342.53 : 154,961.49 = 85,426.02 : x
2. Step 2: Convert to fraction form
   112,342.53/154,961.49 = 85,426.02/x
3. Step 3: Cross multiply
   112,342.53x = 154,961.49 × 85,426.02
4. Step 4: Simplify right side
   112,342.53x = 13,237,744,245.42
5. Step 5: Solve for x
   x = 13,237,744,245.42/112,342.53
6. Step 6: Final answer
   x = 117,833.78