Finding the Fourth Proportional to 78,545.84, 108,395.58 and 42,738.17

Step by Step Solution

1. Step 1: Write the proportion equation
   78,545.84 : 108,395.58 = 42,738.17 : x
2. Step 2: Convert to fraction form
   78,545.84/108,395.58 = 42,738.17/x
3. Step 3: Cross multiply
   78,545.84x = 108,395.58 × 42,738.17
4. Step 4: Simplify right side
   78,545.84x = 4,632,628,725.29
5. Step 5: Solve for x
   x = 4,632,628,725.29/78,545.84
6. Step 6: Final answer
   x = 58,979.94