Finding the Fourth Proportional to 81,236.89, 112,109.96 and 45,426.81

Step by Step Solution

1. Step 1: Write the proportion equation
   81,236.89 : 112,109.96 = 45,426.81 : x
2. Step 2: Convert to fraction form
   81,236.89/112,109.96 = 45,426.81/x
3. Step 3: Cross multiply
   81,236.89x = 112,109.96 × 45,426.81
4. Step 4: Simplify right side
   81,236.89x = 5,092,797,624.89
5. Step 5: Solve for x
   x = 5,092,797,624.89/81,236.89
6. Step 6: Final answer
   x = 62,690.70