Finding the Fourth Proportional to 289,094.55, 433,456.83 and 139,035.98

Step by Step Solution

1. Step 1: Write the proportion equation
   289,094.55 : 433,456.83 = 139,035.98 : x
2. Step 2: Convert to fraction form
   289,094.55/433,456.83 = 139,035.98/x
3. Step 3: Cross multiply
   289,094.55x = 433,456.83 × 139,035.98
4. Step 4: Simplify right side
   289,094.55x = 60,266,092,979.46
5. Step 5: Solve for x
   x = 60,266,092,979.46/289,094.55
6. Step 6: Final answer
   x = 208,464.99