Finding the Fourth Proportional to 91,929.68, 126,877.72 and 85,926.36

Step by Step Solution

1. Step 1: Write the proportion equation
   91,929.68 : 126,877.72 = 85,926.36 : x
2. Step 2: Convert to fraction form
   91,929.68/126,877.72 = 85,926.36/x
3. Step 3: Cross multiply
   91,929.68x = 126,877.72 × 85,926.36
4. Step 4: Simplify right side
   91,929.68x = 10,902,140,429.88
5. Step 5: Solve for x
   x = 10,902,140,429.88/91,929.68
6. Step 6: Final answer
   x = 118,592.18