Finding the Fourth Proportional to 145,151.34, 217,740.71 and 56,411.65

Step by Step Solution

1. Step 1: Write the proportion equation
   145,151.34 : 217,740.71 = 56,411.65 : x
2. Step 2: Convert to fraction form
   145,151.34/217,740.71 = 56,411.65/x
3. Step 3: Cross multiply
   145,151.34x = 217,740.71 × 56,411.65
4. Step 4: Simplify right side
   145,151.34x = 12,283,112,723.27
5. Step 5: Solve for x
   x = 12,283,112,723.27/145,151.34
6. Step 6: Final answer
   x = 84,622.80