Finding the Fourth Proportional to 145,890.72, 201,329.16 and 78,822.72

Step by Step Solution

1. Step 1: Write the proportion equation
   145,890.72 : 201,329.16 = 78,822.72 : x
2. Step 2: Convert to fraction form
   145,890.72/201,329.16 = 78,822.72/x
3. Step 3: Cross multiply
   145,890.72x = 201,329.16 × 78,822.72
4. Step 4: Simplify right side
   145,890.72x = 15,869,312,006.52
5. Step 5: Solve for x
   x = 15,869,312,006.52/145,890.72
6. Step 6: Final answer
   x = 108,775.34