Finding the Fourth Proportional to 78,040.06, 107,695.56 and 42,230.06

Step by Step Solution

1. Step 1: Write the proportion equation
   78,040.06 : 107,695.56 = 42,230.06 : x
2. Step 2: Convert to fraction form
   78,040.06/107,695.56 = 42,230.06/x
3. Step 3: Cross multiply
   78,040.06x = 107,695.56 × 42,230.06
4. Step 4: Simplify right side
   78,040.06x = 4,547,989,960.53
5. Step 5: Solve for x
   x = 4,547,989,960.53/78,040.06
6. Step 6: Final answer
   x = 58,277.63