Finding the Fourth Proportional to 1,308,103,899.42, 1,961,365,526.87 and 521,278,598.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,308,103,899.42 : 1,961,365,526.87 = 521,278,598.82 : x
2. Step 2: Convert to fraction form
   1,308,103,899.42/1,961,365,526.87 = 521,278,598.82/x
3. Step 3: Cross multiply
   1,308,103,899.42x = 1,961,365,526.87 × 521,278,598.82
4. Step 4: Simplify right side
   1,308,103,899.42x = 1,022,417,873,618,038,272
5. Step 5: Solve for x
   x = 1,022,417,873,618,038,272/1,308,103,899.42
6. Step 6: Final answer
   x = 781,602,955.29