Finding the Fourth Proportional to 78,372.79, 108,154.42 and 42,562.81

Step by Step Solution

1. Step 1: Write the proportion equation
   78,372.79 : 108,154.42 = 42,562.81 : x
2. Step 2: Convert to fraction form
   78,372.79/108,154.42 = 42,562.81/x
3. Step 3: Cross multiply
   78,372.79x = 108,154.42 × 42,562.81
4. Step 4: Simplify right side
   78,372.79x = 4,603,356,029.12
5. Step 5: Solve for x
   x = 4,603,356,029.12/78,372.79
6. Step 6: Final answer
   x = 58,736.66