Finding the Fourth Proportional to 663,925,804.77, 995,892,499.23 and 275,748,635.34

Step by Step Solution

1. Step 1: Write the proportion equation
   663,925,804.77 : 995,892,499.23 = 275,748,635.34 : x
2. Step 2: Convert to fraction form
   663,925,804.77/995,892,499.23 = 275,748,635.34/x
3. Step 3: Cross multiply
   663,925,804.77x = 995,892,499.23 × 275,748,635.34
4. Step 4: Simplify right side
   663,925,804.77x = 274,615,997,606,977,664
5. Step 5: Solve for x
   x = 274,615,997,606,977,664/663,925,804.77
6. Step 6: Final answer
   x = 413,624,527.97