Finding the Fourth Proportional to 64,836.63, 89,500.32 and 55,725.93

Step by Step Solution

1. Step 1: Write the proportion equation
   64,836.63 : 89,500.32 = 55,725.93 : x
2. Step 2: Convert to fraction form
   64,836.63/89,500.32 = 55,725.93/x
3. Step 3: Cross multiply
   64,836.63x = 89,500.32 × 55,725.93
4. Step 4: Simplify right side
   64,836.63x = 4,987,488,567.30
5. Step 5: Solve for x
   x = 4,987,488,567.30/64,836.63
6. Step 6: Final answer
   x = 76,923.93