Finding the Fourth Proportional to 45,773.67, 68,317.31 and 42,784.31

Step by Step Solution

1. Step 1: Write the proportion equation
   45,773.67 : 68,317.31 = 42,784.31 : x
2. Step 2: Convert to fraction form
   45,773.67/68,317.31 = 42,784.31/x
3. Step 3: Cross multiply
   45,773.67x = 68,317.31 × 42,784.31
4. Step 4: Simplify right side
   45,773.67x = 2,922,908,413.90
5. Step 5: Solve for x
   x = 2,922,908,413.90/45,773.67
6. Step 6: Final answer
   x = 63,855.67