Finding the Fourth Proportional to 145,965.42, 201,432.24 and 78,897.42

Step by Step Solution

1. Step 1: Write the proportion equation
   145,965.42 : 201,432.24 = 78,897.42 : x
2. Step 2: Convert to fraction form
   145,965.42/201,432.24 = 78,897.42/x
3. Step 3: Cross multiply
   145,965.42x = 201,432.24 × 78,897.42
4. Step 4: Simplify right side
   145,965.42x = 15,892,484,040.82
5. Step 5: Solve for x
   x = 15,892,484,040.82/145,965.42
6. Step 6: Final answer
   x = 108,878.42