Finding the Fourth Proportional to 91,097.78, 136,663.05 and 43,672.68

Step by Step Solution

1. Step 1: Write the proportion equation
   91,097.78 : 136,663.05 = 43,672.68 : x
2. Step 2: Convert to fraction form
   91,097.78/136,663.05 = 43,672.68/x
3. Step 3: Cross multiply
   91,097.78x = 136,663.05 × 43,672.68
4. Step 4: Simplify right side
   91,097.78x = 5,968,441,650.47
5. Step 5: Solve for x
   x = 5,968,441,650.47/91,097.78
6. Step 6: Final answer
   x = 65,516.88