Finding the Fourth Proportional to 162,434.45, 243,633.05 and 42,502.99

Step by Step Solution

1. Step 1: Write the proportion equation
   162,434.45 : 243,633.05 = 42,502.99 : x
2. Step 2: Convert to fraction form
   162,434.45/243,633.05 = 42,502.99/x
3. Step 3: Cross multiply
   162,434.45x = 243,633.05 × 42,502.99
4. Step 4: Simplify right side
   162,434.45x = 10,355,133,087.82
5. Step 5: Solve for x
   x = 10,355,133,087.82/162,434.45
6. Step 6: Final answer
   x = 63,749.61