Finding the Fourth Proportional to 865,380,499.88, 1,194,226,139.59 and 468,903,182.78

Step by Step Solution

1. Step 1: Write the proportion equation
   865,380,499.88 : 1,194,226,139.59 = 468,903,182.78 : x
2. Step 2: Convert to fraction form
   865,380,499.88/1,194,226,139.59 = 468,903,182.78/x
3. Step 3: Cross multiply
   865,380,499.88x = 1,194,226,139.59 × 468,903,182.78
4. Step 4: Simplify right side
   865,380,499.88x = 559,976,437,814,660,800
5. Step 5: Solve for x
   x = 559,976,437,814,660,800/865,380,499.88
6. Step 6: Final answer
   x = 647,086,961.05