Finding the Fourth Proportional to 869,244,981.63, 1,199,870,095.06 and 516,820,131.57

Step by Step Solution

1. Step 1: Write the proportion equation
   869,244,981.63 : 1,199,870,095.06 = 516,820,131.57 : x
2. Step 2: Convert to fraction form
   869,244,981.63/1,199,870,095.06 = 516,820,131.57/x
3. Step 3: Cross multiply
   869,244,981.63x = 1,199,870,095.06 × 516,820,131.57
4. Step 4: Simplify right side
   869,244,981.63x = 620,117,020,395,817,600
5. Step 5: Solve for x
   x = 620,117,020,395,817,600/869,244,981.63
6. Step 6: Final answer
   x = 713,397,297.08