Finding the Fourth Proportional to 112,104.95, 154,748.01 and 82,128.36

Step by Step Solution

1. Step 1: Write the proportion equation
   112,104.95 : 154,748.01 = 82,128.36 : x
2. Step 2: Convert to fraction form
   112,104.95/154,748.01 = 82,128.36/x
3. Step 3: Cross multiply
   112,104.95x = 154,748.01 × 82,128.36
4. Step 4: Simplify right side
   112,104.95x = 12,709,200,274.56
5. Step 5: Solve for x
   x = 12,709,200,274.56/112,104.95
6. Step 6: Final answer
   x = 113,368.77