Finding the Fourth Proportional to 106,585.63, 147,067.72 and 64,146.89

Step by Step Solution

1. Step 1: Write the proportion equation
   106,585.63 : 147,067.72 = 64,146.89 : x
2. Step 2: Convert to fraction form
   106,585.63/147,067.72 = 64,146.89/x
3. Step 3: Cross multiply
   106,585.63x = 147,067.72 × 64,146.89
4. Step 4: Simplify right side
   106,585.63x = 9,433,937,064.69
5. Step 5: Solve for x
   x = 9,433,937,064.69/106,585.63
6. Step 6: Final answer
   x = 88,510.41