Finding the Fourth Proportional to 106,665.17, 147,118.12 and 74,401.45

Step by Step Solution

1. Step 1: Write the proportion equation
   106,665.17 : 147,118.12 = 74,401.45 : x
2. Step 2: Convert to fraction form
   106,665.17/147,118.12 = 74,401.45/x
3. Step 3: Cross multiply
   106,665.17x = 147,118.12 × 74,401.45
4. Step 4: Simplify right side
   106,665.17x = 10,945,801,449.27
5. Step 5: Solve for x
   x = 10,945,801,449.27/106,665.17
6. Step 6: Final answer
   x = 102,618.33