Finding the Fourth Proportional to 138,253.37, 190,737.50 and 80,874.41

Step by Step Solution

1. Step 1: Write the proportion equation
   138,253.37 : 190,737.50 = 80,874.41 : x
2. Step 2: Convert to fraction form
   138,253.37/190,737.50 = 80,874.41/x
3. Step 3: Cross multiply
   138,253.37x = 190,737.50 × 80,874.41
4. Step 4: Simplify right side
   138,253.37x = 15,425,781,419.32
5. Step 5: Solve for x
   x = 15,425,781,419.32/138,253.37
6. Step 6: Final answer
   x = 111,576.17