Finding the Fourth Proportional to 406,010.34, 609,056.47 and 139,735.82

Step by Step Solution

1. Step 1: Write the proportion equation
   406,010.34 : 609,056.47 = 139,735.82 : x
2. Step 2: Convert to fraction form
   406,010.34/609,056.47 = 139,735.82/x
3. Step 3: Cross multiply
   406,010.34x = 609,056.47 × 139,735.82
4. Step 4: Simplify right side
   406,010.34x = 85,107,005,261.76
5. Step 5: Solve for x
   x = 85,107,005,261.76/406,010.34
6. Step 6: Final answer
   x = 209,617.83