Finding the Fourth Proportional to 78,074.12, 107,742.48 and 42,264.56

Step by Step Solution

1. Step 1: Write the proportion equation
   78,074.12 : 107,742.48 = 42,264.56 : x
2. Step 2: Convert to fraction form
   78,074.12/107,742.48 = 42,264.56/x
3. Step 3: Cross multiply
   78,074.12x = 107,742.48 × 42,264.56
4. Step 4: Simplify right side
   78,074.12x = 4,553,688,510.51
5. Step 5: Solve for x
   x = 4,553,688,510.51/78,074.12
6. Step 6: Final answer
   x = 58,325.20