Finding the Fourth Proportional to 78,384.74, 108,171.74 and 42,575.45

Step by Step Solution

1. Step 1: Write the proportion equation
   78,384.74 : 108,171.74 = 42,575.45 : x
2. Step 2: Convert to fraction form
   78,384.74/108,171.74 = 42,575.45/x
3. Step 3: Cross multiply
   78,384.74x = 108,171.74 × 42,575.45
4. Step 4: Simplify right side
   78,384.74x = 4,605,460,294.91
5. Step 5: Solve for x
   x = 4,605,460,294.91/78,384.74
6. Step 6: Final answer
   x = 58,754.55