Finding the Fourth Proportional to 496,744.25, 745,123.35 and 141,758.30

Step by Step Solution

1. Step 1: Write the proportion equation
   496,744.25 : 745,123.35 = 141,758.30 : x
2. Step 2: Convert to fraction form
   496,744.25/745,123.35 = 141,758.30/x
3. Step 3: Cross multiply
   496,744.25x = 745,123.35 × 141,758.30
4. Step 4: Simplify right side
   496,744.25x = 105,627,421,780.71
5. Step 5: Solve for x
   x = 105,627,421,780.71/496,744.25
6. Step 6: Final answer
   x = 212,639.45