Finding the Fourth Proportional to 91,189.27, 136,832.06 and 64,706.39

Step by Step Solution

1. Step 1: Write the proportion equation
   91,189.27 : 136,832.06 = 64,706.39 : x
2. Step 2: Convert to fraction form
   91,189.27/136,832.06 = 64,706.39/x
3. Step 3: Cross multiply
   91,189.27x = 136,832.06 × 64,706.39
4. Step 4: Simplify right side
   91,189.27x = 8,853,908,116.47
5. Step 5: Solve for x
   x = 8,853,908,116.47/91,189.27
6. Step 6: Final answer
   x = 97,093.75