Finding the Fourth Proportional to 76,726.76, 105,875.36 and 42,734.10

Step by Step Solution

1. Step 1: Write the proportion equation
   76,726.76 : 105,875.36 = 42,734.10 : x
2. Step 2: Convert to fraction form
   76,726.76/105,875.36 = 42,734.10/x
3. Step 3: Cross multiply
   76,726.76x = 105,875.36 × 42,734.10
4. Step 4: Simplify right side
   76,726.76x = 4,524,488,221.78
5. Step 5: Solve for x
   x = 4,524,488,221.78/76,726.76
6. Step 6: Final answer
   x = 58,968.84