Finding the Fourth Proportional to 78,296.09, 108,047.67 and 42,485.81

Step by Step Solution

1. Step 1: Write the proportion equation
   78,296.09 : 108,047.67 = 42,485.81 : x
2. Step 2: Convert to fraction form
   78,296.09/108,047.67 = 42,485.81/x
3. Step 3: Cross multiply
   78,296.09x = 108,047.67 × 42,485.81
4. Step 4: Simplify right side
   78,296.09x = 4,590,492,778.56
5. Step 5: Solve for x
   x = 4,590,492,778.56/78,296.09
6. Step 6: Final answer
   x = 58,629.91