Finding the Fourth Proportional to 113,499.20, 170,048.05 and 106,748.35

Step by Step Solution

1. Step 1: Write the proportion equation
   113,499.20 : 170,048.05 = 106,748.35 : x
2. Step 2: Convert to fraction form
   113,499.20/170,048.05 = 106,748.35/x
3. Step 3: Cross multiply
   113,499.20x = 170,048.05 × 106,748.35
4. Step 4: Simplify right side
   113,499.20x = 18,152,348,545.31
5. Step 5: Solve for x
   x = 18,152,348,545.31/113,499.20
6. Step 6: Final answer
   x = 159,933.72