Finding the Fourth Proportional to 145,900.86, 218,693.61 and 61,641.42

Step by Step Solution

1. Step 1: Write the proportion equation
   145,900.86 : 218,693.61 = 61,641.42 : x
2. Step 2: Convert to fraction form
   145,900.86/218,693.61 = 61,641.42/x
3. Step 3: Cross multiply
   145,900.86x = 218,693.61 × 61,641.42
4. Step 4: Simplify right side
   145,900.86x = 13,480,584,665.33
5. Step 5: Solve for x
   x = 13,480,584,665.33/145,900.86
6. Step 6: Final answer
   x = 92,395.51