Finding the Fourth Proportional to 81,155.51, 111,992.51 and 45,345.81

Step by Step Solution

1. Step 1: Write the proportion equation
   81,155.51 : 111,992.51 = 45,345.81 : x
2. Step 2: Convert to fraction form
   81,155.51/111,992.51 = 45,345.81/x
3. Step 3: Cross multiply
   81,155.51x = 111,992.51 × 45,345.81
4. Step 4: Simplify right side
   81,155.51x = 5,078,390,853.15
5. Step 5: Solve for x
   x = 5,078,390,853.15/81,155.51
6. Step 6: Final answer
   x = 62,576.05