Finding the Fourth Proportional to 191,105.48, 286,699.88 and 57,996.16

Step by Step Solution

1. Step 1: Write the proportion equation
   191,105.48 : 286,699.88 = 57,996.16 : x
2. Step 2: Convert to fraction form
   191,105.48/286,699.88 = 57,996.16/x
3. Step 3: Cross multiply
   191,105.48x = 286,699.88 × 57,996.16
4. Step 4: Simplify right side
   191,105.48x = 16,627,491,214.47
5. Step 5: Solve for x
   x = 16,627,491,214.47/191,105.48
6. Step 6: Final answer
   x = 87,006.88