Finding the Fourth Proportional to 168,499,340.10, 252,749,010.15 and 168,499,340.10

Step by Step Solution

1. Step 1: Write the proportion equation
   168,499,340.10 : 252,749,010.15 = 168,499,340.10 : x
2. Step 2: Convert to fraction form
   168,499,340.10/252,749,010.15 = 168,499,340.10/x
3. Step 3: Cross multiply
   168,499,340.10x = 252,749,010.15 × 168,499,340.10
4. Step 4: Simplify right side
   168,499,340.10x = 42,588,041,421,203,200
5. Step 5: Solve for x
   x = 42,588,041,421,203,200/168,499,340.10
6. Step 6: Final answer
   x = 252,749,010.15