Finding the Fourth Proportional to 315,479.25, 473,219.89 and 78,821.96

Step by Step Solution

1. Step 1: Write the proportion equation
   315,479.25 : 473,219.89 = 78,821.96 : x
2. Step 2: Convert to fraction form
   315,479.25/473,219.89 = 78,821.96/x
3. Step 3: Cross multiply
   315,479.25x = 473,219.89 × 78,821.96
4. Step 4: Simplify right side
   315,479.25x = 37,300,116,677.63
5. Step 5: Solve for x
   x = 37,300,116,677.63/315,479.25
6. Step 6: Final answer
   x = 118,233.19