Finding the Fourth Proportional to 78,749.23, 108,671.57 and 42,939.94

Step by Step Solution

1. Step 1: Write the proportion equation
   78,749.23 : 108,671.57 = 42,939.94 : x
2. Step 2: Convert to fraction form
   78,749.23/108,671.57 = 42,939.94/x
3. Step 3: Cross multiply
   78,749.23x = 108,671.57 × 42,939.94
4. Step 4: Simplify right side
   78,749.23x = 4,666,350,695.51
5. Step 5: Solve for x
   x = 4,666,350,695.51/78,749.23
6. Step 6: Final answer
   x = 59,255.83