Finding the Fourth Proportional to 762,061.32, 1,143,123.57 and 312,465.15

Step by Step Solution

1. Step 1: Write the proportion equation
   762,061.32 : 1,143,123.57 = 312,465.15 : x
2. Step 2: Convert to fraction form
   762,061.32/1,143,123.57 = 312,465.15/x
3. Step 3: Cross multiply
   762,061.32x = 1,143,123.57 × 312,465.15
4. Step 4: Simplify right side
   762,061.32x = 357,186,277,768.59
5. Step 5: Solve for x
   x = 357,186,277,768.59/762,061.32
6. Step 6: Final answer
   x = 468,710.68