Finding the Fourth Proportional to 580,870.79, 871,647.50 and 243,885.53

Step by Step Solution

1. Step 1: Write the proportion equation
   580,870.79 : 871,647.50 = 243,885.53 : x
2. Step 2: Convert to fraction form
   580,870.79/871,647.50 = 243,885.53/x
3. Step 3: Cross multiply
   580,870.79x = 871,647.50 × 243,885.53
4. Step 4: Simplify right side
   580,870.79x = 212,582,206,933.01
5. Step 5: Solve for x
   x = 212,582,206,933.01/580,870.79
6. Step 6: Final answer
   x = 365,971.59