Finding the Fourth Proportional to 91,196.58, 136,843.02 and 64,713.71

Step by Step Solution

1. Step 1: Write the proportion equation
   91,196.58 : 136,843.02 = 64,713.71 : x
2. Step 2: Convert to fraction form
   91,196.58/136,843.02 = 64,713.71/x
3. Step 3: Cross multiply
   91,196.58x = 136,843.02 × 64,713.71
4. Step 4: Simplify right side
   91,196.58x = 8,855,618,827.59
5. Step 5: Solve for x
   x = 8,855,618,827.59/91,196.58
6. Step 6: Final answer
   x = 97,104.73