Finding the Fourth Proportional to 145,768.34, 218,670.02 and 137,796.72

Step by Step Solution

1. Step 1: Write the proportion equation
   145,768.34 : 218,670.02 = 137,796.72 : x
2. Step 2: Convert to fraction form
   145,768.34/218,670.02 = 137,796.72/x
3. Step 3: Cross multiply
   145,768.34x = 218,670.02 × 137,796.72
4. Step 4: Simplify right side
   145,768.34x = 30,132,011,518.33
5. Step 5: Solve for x
   x = 30,132,011,518.33/145,768.34
6. Step 6: Final answer
   x = 206,711.63