Finding the Fourth Proportional to 556,627.76, 768,146.58 and 301,978.88

Step by Step Solution

1. Step 1: Write the proportion equation
   556,627.76 : 768,146.58 = 301,978.88 : x
2. Step 2: Convert to fraction form
   556,627.76/768,146.58 = 301,978.88/x
3. Step 3: Cross multiply
   556,627.76x = 768,146.58 × 301,978.88
4. Step 4: Simplify right side
   556,627.76x = 231,964,040,063.50
5. Step 5: Solve for x
   x = 231,964,040,063.50/556,627.76
6. Step 6: Final answer
   x = 416,731.00