Finding the Fourth Proportional to 452,422.96, 678,667.10 and 136,904.72

Step by Step Solution

1. Step 1: Write the proportion equation
   452,422.96 : 678,667.10 = 136,904.72 : x
2. Step 2: Convert to fraction form
   452,422.96/678,667.10 = 136,904.72/x
3. Step 3: Cross multiply
   452,422.96x = 678,667.10 × 136,904.72
4. Step 4: Simplify right side
   452,422.96x = 92,912,729,298.71
5. Step 5: Solve for x
   x = 92,912,729,298.71/452,422.96
6. Step 6: Final answer
   x = 205,366.96