Finding the Fourth Proportional to 78,718.32, 108,627.93 and 42,907.50

Step by Step Solution

1. Step 1: Write the proportion equation
   78,718.32 : 108,627.93 = 42,907.50 : x
2. Step 2: Convert to fraction form
   78,718.32/108,627.93 = 42,907.50/x
3. Step 3: Cross multiply
   78,718.32x = 108,627.93 × 42,907.50
4. Step 4: Simplify right side
   78,718.32x = 4,660,952,906.48
5. Step 5: Solve for x
   x = 4,660,952,906.48/78,718.32
6. Step 6: Final answer
   x = 59,210.52