Finding the Fourth Proportional to 78,512.15, 108,386.82 and 53,152.53

Step by Step Solution

1. Step 1: Write the proportion equation
   78,512.15 : 108,386.82 = 53,152.53 : x
2. Step 2: Convert to fraction form
   78,512.15/108,386.82 = 53,152.53/x
3. Step 3: Cross multiply
   78,512.15x = 108,386.82 × 53,152.53
4. Step 4: Simplify right side
   78,512.15x = 5,761,033,701.65
5. Step 5: Solve for x
   x = 5,761,033,701.65/78,512.15
6. Step 6: Final answer
   x = 73,377.61