Finding the Fourth Proportional to 151,435.50, 227,008.59 and 56,639.98

Step by Step Solution

1. Step 1: Write the proportion equation
   151,435.50 : 227,008.59 = 56,639.98 : x
2. Step 2: Convert to fraction form
   151,435.50/227,008.59 = 56,639.98/x
3. Step 3: Cross multiply
   151,435.50x = 227,008.59 × 56,639.98
4. Step 4: Simplify right side
   151,435.50x = 12,857,761,997.43
5. Step 5: Solve for x
   x = 12,857,761,997.43/151,435.50
6. Step 6: Final answer
   x = 84,905.86