Finding the Fourth Proportional to 78,462.78, 108,274.14 and 42,652.50

Step by Step Solution

1. Step 1: Write the proportion equation
   78,462.78 : 108,274.14 = 42,652.50 : x
2. Step 2: Convert to fraction form
   78,462.78/108,274.14 = 42,652.50/x
3. Step 3: Cross multiply
   78,462.78x = 108,274.14 × 42,652.50
4. Step 4: Simplify right side
   78,462.78x = 4,618,162,756.35
5. Step 5: Solve for x
   x = 4,618,162,756.35/78,462.78
6. Step 6: Final answer
   x = 58,858.01