Finding the Fourth Proportional to 85,667.56, 128,476.68 and 29,505.40

Step by Step Solution

1. Step 1: Write the proportion equation
   85,667.56 : 128,476.68 = 29,505.40 : x
2. Step 2: Convert to fraction form
   85,667.56/128,476.68 = 29,505.40/x
3. Step 3: Cross multiply
   85,667.56x = 128,476.68 × 29,505.40
4. Step 4: Simplify right side
   85,667.56x = 3,790,755,834.07
5. Step 5: Solve for x
   x = 3,790,755,834.07/85,667.56
6. Step 6: Final answer
   x = 44,249.61