Finding the Fourth Proportional to 1,672,994,568.72, 2,308,719,763.20 and 920,291,577.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,672,994,568.72 : 2,308,719,763.20 = 920,291,577.60 : x
2. Step 2: Convert to fraction form
   1,672,994,568.72/2,308,719,763.20 = 920,291,577.60/x
3. Step 3: Cross multiply
   1,672,994,568.72x = 2,308,719,763.20 × 920,291,577.60
4. Step 4: Simplify right side
   1,672,994,568.72x = 2,124,695,353,111,626,240
5. Step 5: Solve for x
   x = 2,124,695,353,111,626,240/1,672,994,568.72
6. Step 6: Final answer
   x = 1,269,995,368.09