Finding the Fourth Proportional to 78,035.88, 107,689.48 and 42,225.88

Step by Step Solution

1. Step 1: Write the proportion equation
   78,035.88 : 107,689.48 = 42,225.88 : x
2. Step 2: Convert to fraction form
   78,035.88/107,689.48 = 42,225.88/x
3. Step 3: Cross multiply
   78,035.88x = 107,689.48 × 42,225.88
4. Step 4: Simplify right side
   78,035.88x = 4,547,282,521.30
5. Step 5: Solve for x
   x = 4,547,282,521.30/78,035.88
6. Step 6: Final answer
   x = 58,271.69