Finding the Fourth Proportional to 31,114.37, 42,942 and 19,784.99

Step by Step Solution

1. Step 1: Write the proportion equation
   31,114.37 : 42,942 = 19,784.99 : x
2. Step 2: Convert to fraction form
   31,114.37/42,942 = 19,784.99/x
3. Step 3: Cross multiply
   31,114.37x = 42,942 × 19,784.99
4. Step 4: Simplify right side
   31,114.37x = 849,606,825.87
5. Step 5: Solve for x
   x = 849,606,825.87/31,114.37
6. Step 6: Final answer
   x = 27,305.93