Finding the Fourth Proportional to 89,906.38, 134,817.86 and 52,477.28

Step by Step Solution

1. Step 1: Write the proportion equation
   89,906.38 : 134,817.86 = 52,477.28 : x
2. Step 2: Convert to fraction form
   89,906.38/134,817.86 = 52,477.28/x
3. Step 3: Cross multiply
   89,906.38x = 134,817.86 × 52,477.28
4. Step 4: Simplify right side
   89,906.38x = 7,074,874,588.22
5. Step 5: Solve for x
   x = 7,074,874,588.22/89,906.38
6. Step 6: Final answer
   x = 78,691.57