Finding the Fourth Proportional to 663,510,799.50, 915,645,297.24 and 370,155,367.50

Step by Step Solution

1. Step 1: Write the proportion equation
   663,510,799.50 : 915,645,297.24 = 370,155,367.50 : x
2. Step 2: Convert to fraction form
   663,510,799.50/915,645,297.24 = 370,155,367.50/x
3. Step 3: Cross multiply
   663,510,799.50x = 915,645,297.24 × 370,155,367.50
4. Step 4: Simplify right side
   663,510,799.50x = 338,931,021,499,518,912
5. Step 5: Solve for x
   x = 338,931,021,499,518,912/663,510,799.50
6. Step 6: Final answer
   x = 510,814,626.91