Finding the Fourth Proportional to 205,158.10, 307,706.37 and 64,898.50

Step by Step Solution

1. Step 1: Write the proportion equation
   205,158.10 : 307,706.37 = 64,898.50 : x
2. Step 2: Convert to fraction form
   205,158.10/307,706.37 = 64,898.50/x
3. Step 3: Cross multiply
   205,158.10x = 307,706.37 × 64,898.50
4. Step 4: Simplify right side
   205,158.10x = 19,969,681,853.45
5. Step 5: Solve for x
   x = 19,969,681,853.45/205,158.10
6. Step 6: Final answer
   x = 97,338.01