Finding the Fourth Proportional to 526,978.96, 789,984.06 and 189,937.12

Step by Step Solution

1. Step 1: Write the proportion equation
   526,978.96 : 789,984.06 = 189,937.12 : x
2. Step 2: Convert to fraction form
   526,978.96/789,984.06 = 189,937.12/x
3. Step 3: Cross multiply
   526,978.96x = 789,984.06 × 189,937.12
4. Step 4: Simplify right side
   526,978.96x = 150,047,297,202.31
5. Step 5: Solve for x
   x = 150,047,297,202.31/526,978.96
6. Step 6: Final answer
   x = 284,731.10