Finding the Fourth Proportional to 67,855.69, 101,688.72 and 57,808.09

Step by Step Solution

1. Step 1: Write the proportion equation
   67,855.69 : 101,688.72 = 57,808.09 : x
2. Step 2: Convert to fraction form
   67,855.69/101,688.72 = 57,808.09/x
3. Step 3: Cross multiply
   67,855.69x = 101,688.72 × 57,808.09
4. Step 4: Simplify right side
   67,855.69x = 5,878,430,677.74
5. Step 5: Solve for x
   x = 5,878,430,677.74/67,855.69
6. Step 6: Final answer
   x = 86,631.36