Finding the Fourth Proportional to 1,129,455,591.59, 1,558,686,564 and 627,685,520.36

Step by Step Solution

1. Step 1: Write the proportion equation
   1,129,455,591.59 : 1,558,686,564 = 627,685,520.36 : x
2. Step 2: Convert to fraction form
   1,129,455,591.59/1,558,686,564 = 627,685,520.36/x
3. Step 3: Cross multiply
   1,129,455,591.59x = 1,558,686,564 × 627,685,520.36
4. Step 4: Simplify right side
   1,129,455,591.59x = 978,364,986,994,686,976
5. Step 5: Solve for x
   x = 978,364,986,994,686,976/1,129,455,591.59
6. Step 6: Final answer
   x = 866,227,051.58