Finding the Fourth Proportional to 870,739,101.30, 1,222,478,479.50 and 870,739,101.30

Step by Step Solution

1. Step 1: Write the proportion equation
   870,739,101.30 : 1,222,478,479.50 = 870,739,101.30 : x
2. Step 2: Convert to fraction form
   870,739,101.30/1,222,478,479.50 = 870,739,101.30/x
3. Step 3: Cross multiply
   870,739,101.30x = 1,222,478,479.50 × 870,739,101.30
4. Step 4: Simplify right side
   870,739,101.30x = 1,064,459,812,598,420,352
5. Step 5: Solve for x
   x = 1,064,459,812,598,420,352/870,739,101.30
6. Step 6: Final answer
   x = 1,222,478,479.50