Finding the Fourth Proportional to 145,945.50, 201,404.82 and 78,877.50

Step by Step Solution

1. Step 1: Write the proportion equation
   145,945.50 : 201,404.82 = 78,877.50 : x
2. Step 2: Convert to fraction form
   145,945.50/201,404.82 = 78,877.50/x
3. Step 3: Cross multiply
   145,945.50x = 201,404.82 × 78,877.50
4. Step 4: Simplify right side
   145,945.50x = 15,886,308,689.55
5. Step 5: Solve for x
   x = 15,886,308,689.55/145,945.50
6. Step 6: Final answer
   x = 108,850.97