Finding the Fourth Proportional to 47,791.68, 65,916 and 42,419.76

Step by Step Solution

1. Step 1: Write the proportion equation
   47,791.68 : 65,916 = 42,419.76 : x
2. Step 2: Convert to fraction form
   47,791.68/65,916 = 42,419.76/x
3. Step 3: Cross multiply
   47,791.68x = 65,916 × 42,419.76
4. Step 4: Simplify right side
   47,791.68x = 2,796,140,900.16
5. Step 5: Solve for x
   x = 2,796,140,900.16/47,791.68
6. Step 6: Final answer
   x = 58,506.86