Finding the Fourth Proportional to 559,978,888.14, 772,655,499.86 and 321,778,047.02

Step by Step Solution

1. Step 1: Write the proportion equation
   559,978,888.14 : 772,655,499.86 = 321,778,047.02 : x
2. Step 2: Convert to fraction form
   559,978,888.14/772,655,499.86 = 321,778,047.02/x
3. Step 3: Cross multiply
   559,978,888.14x = 772,655,499.86 × 321,778,047.02
4. Step 4: Simplify right side
   559,978,888.14x = 248,623,577,764,212,672
5. Step 5: Solve for x
   x = 248,623,577,764,212,672/559,978,888.14
6. Step 6: Final answer
   x = 443,987,412.79