Finding the Fourth Proportional to 1,415,300,489.42, 1,953,120,574.72 and 780,207,029.19

Step by Step Solution

1. Step 1: Write the proportion equation
   1,415,300,489.42 : 1,953,120,574.72 = 780,207,029.19 : x
2. Step 2: Convert to fraction form
   1,415,300,489.42/1,953,120,574.72 = 780,207,029.19/x
3. Step 3: Cross multiply
   1,415,300,489.42x = 1,953,120,574.72 × 780,207,029.19
4. Step 4: Simplify right side
   1,415,300,489.42x = 1,523,838,401,250,164,992
5. Step 5: Solve for x
   x = 1,523,838,401,250,164,992/1,415,300,489.42
6. Step 6: Final answer
   x = 1,076,688,952.37