Finding the Fourth Proportional to 81,413.15, 112,348.82 and 45,603.05

Step by Step Solution

1. Step 1: Write the proportion equation
   81,413.15 : 112,348.82 = 45,603.05 : x
2. Step 2: Convert to fraction form
   81,413.15/112,348.82 = 45,603.05/x
3. Step 3: Cross multiply
   81,413.15x = 112,348.82 × 45,603.05
4. Step 4: Simplify right side
   81,413.15x = 5,123,448,066.14
5. Step 5: Solve for x
   x = 5,123,448,066.14/81,413.15
6. Step 6: Final answer
   x = 62,931.46