Finding the Fourth Proportional to 85,828.61, 128,748.58 and 29,674.15

Step by Step Solution

1. Step 1: Write the proportion equation
   85,828.61 : 128,748.58 = 29,674.15 : x
2. Step 2: Convert to fraction form
   85,828.61/128,748.58 = 29,674.15/x
3. Step 3: Cross multiply
   85,828.61x = 128,748.58 × 29,674.15
4. Step 4: Simplify right side
   85,828.61x = 3,820,504,279.15
5. Step 5: Solve for x
   x = 3,820,504,279.15/85,828.61
6. Step 6: Final answer
   x = 44,513.18