Finding the Fourth Proportional to 59,783.67, 89,687.86 and 49,991.38

Step by Step Solution

1. Step 1: Write the proportion equation
   59,783.67 : 89,687.86 = 49,991.38 : x
2. Step 2: Convert to fraction form
   59,783.67/89,687.86 = 49,991.38/x
3. Step 3: Cross multiply
   59,783.67x = 89,687.86 × 49,991.38
4. Step 4: Simplify right side
   59,783.67x = 4,483,619,541.45
5. Step 5: Solve for x
   x = 4,483,619,541.45/59,783.67
6. Step 6: Final answer
   x = 74,997.40