Finding the Fourth Proportional to 89,953.12, 134,919.42 and 30,781

Step by Step Solution

1. Step 1: Write the proportion equation
   89,953.12 : 134,919.42 = 30,781 : x
2. Step 2: Convert to fraction form
   89,953.12/134,919.42 = 30,781/x
3. Step 3: Cross multiply
   89,953.12x = 134,919.42 × 30,781
4. Step 4: Simplify right side
   89,953.12x = 4,152,954,667.02
5. Step 5: Solve for x
   x = 4,152,954,667.02/89,953.12
6. Step 6: Final answer
   x = 46,167.99