Finding the Fourth Proportional to 210,099.69, 315,101.48 and 60,338.79

Step by Step Solution

1. Step 1: Write the proportion equation
   210,099.69 : 315,101.48 = 60,338.79 : x
2. Step 2: Convert to fraction form
   210,099.69/315,101.48 = 60,338.79/x
3. Step 3: Cross multiply
   210,099.69x = 315,101.48 × 60,338.79
4. Step 4: Simplify right side
   210,099.69x = 19,012,841,728.72
5. Step 5: Solve for x
   x = 19,012,841,728.72/210,099.69
6. Step 6: Final answer
   x = 90,494.38