Finding the Fourth Proportional to 81,738.76, 112,809.57 and 45,928

Step by Step Solution

1. Step 1: Write the proportion equation
   81,738.76 : 112,809.57 = 45,928 : x
2. Step 2: Convert to fraction form
   81,738.76/112,809.57 = 45,928/x
3. Step 3: Cross multiply
   81,738.76x = 112,809.57 × 45,928
4. Step 4: Simplify right side
   81,738.76x = 5,181,117,930.96
5. Step 5: Solve for x
   x = 5,181,117,930.96/81,738.76
6. Step 6: Final answer
   x = 63,386.30