Finding the Fourth Proportional to 145,978.74, 218,870.88 and 52,472.34

Step by Step Solution

1. Step 1: Write the proportion equation
   145,978.74 : 218,870.88 = 52,472.34 : x
2. Step 2: Convert to fraction form
   145,978.74/218,870.88 = 52,472.34/x
3. Step 3: Cross multiply
   145,978.74x = 218,870.88 × 52,472.34
4. Step 4: Simplify right side
   145,978.74x = 11,484,667,231.46
5. Step 5: Solve for x
   x = 11,484,667,231.46/145,978.74
6. Step 6: Final answer
   x = 78,673.56