Finding the Fourth Proportional to 286,834.56, 430,447.86 and 99,846.06

Step by Step Solution

1. Step 1: Write the proportion equation
   286,834.56 : 430,447.86 = 99,846.06 : x
2. Step 2: Convert to fraction form
   286,834.56/430,447.86 = 99,846.06/x
3. Step 3: Cross multiply
   286,834.56x = 430,447.86 × 99,846.06
4. Step 4: Simplify right side
   286,834.56x = 42,978,522,856.43
5. Step 5: Solve for x
   x = 42,978,522,856.43/286,834.56
6. Step 6: Final answer
   x = 149,837.32