Finding the Fourth Proportional to 78,758.30, 108,684.48 and 42,949

Step by Step Solution

1. Step 1: Write the proportion equation
   78,758.30 : 108,684.48 = 42,949 : x
2. Step 2: Convert to fraction form
   78,758.30/108,684.48 = 42,949/x
3. Step 3: Cross multiply
   78,758.30x = 108,684.48 × 42,949
4. Step 4: Simplify right side
   78,758.30x = 4,667,889,731.52
5. Step 5: Solve for x
   x = 4,667,889,731.52/78,758.30
6. Step 6: Final answer
   x = 59,268.54