Finding the Fourth Proportional to 78,036.75, 107,689.91 and 42,225.98

Step by Step Solution

1. Step 1: Write the proportion equation
   78,036.75 : 107,689.91 = 42,225.98 : x
2. Step 2: Convert to fraction form
   78,036.75/107,689.91 = 42,225.98/x
3. Step 3: Cross multiply
   78,036.75x = 107,689.91 × 42,225.98
4. Step 4: Simplify right side
   78,036.75x = 4,547,311,236.28
5. Step 5: Solve for x
   x = 4,547,311,236.28/78,036.75
6. Step 6: Final answer
   x = 58,271.41