Finding the Fourth Proportional to 573,064,106.96, 790,820,902.72 and 318,743,748.56

Step by Step Solution

1. Step 1: Write the proportion equation
   573,064,106.96 : 790,820,902.72 = 318,743,748.56 : x
2. Step 2: Convert to fraction form
   573,064,106.96/790,820,902.72 = 318,743,748.56/x
3. Step 3: Cross multiply
   573,064,106.96x = 790,820,902.72 × 318,743,748.56
4. Step 4: Simplify right side
   573,064,106.96x = 252,069,218,972,575,904
5. Step 5: Solve for x
   x = 252,069,218,972,575,904/573,064,106.96
6. Step 6: Final answer
   x = 439,862,165.35