Finding the Fourth Proportional to 112,128.90, 168,160.33 and 41,991.81

Step by Step Solution

1. Step 1: Write the proportion equation
   112,128.90 : 168,160.33 = 41,991.81 : x
2. Step 2: Convert to fraction form
   112,128.90/168,160.33 = 41,991.81/x
3. Step 3: Cross multiply
   112,128.90x = 168,160.33 × 41,991.81
4. Step 4: Simplify right side
   112,128.90x = 7,061,356,626.90
5. Step 5: Solve for x
   x = 7,061,356,626.90/112,128.90
6. Step 6: Final answer
   x = 62,975.35