Finding the Fourth Proportional to 85,128.72, 117,476.69 and 46,887.54

Step by Step Solution

1. Step 1: Write the proportion equation
   85,128.72 : 117,476.69 = 46,887.54 : x
2. Step 2: Convert to fraction form
   85,128.72/117,476.69 = 46,887.54/x
3. Step 3: Cross multiply
   85,128.72x = 117,476.69 × 46,887.54
4. Step 4: Simplify right side
   85,128.72x = 5,508,192,767.00
5. Step 5: Solve for x
   x = 5,508,192,767.00/85,128.72
6. Step 6: Final answer
   x = 64,704.28