Finding the Fourth Proportional to 219,074,871.56, 328,090,646.12 and 126,764,068.10

Step by Step Solution

1. Step 1: Write the proportion equation
   219,074,871.56 : 328,090,646.12 = 126,764,068.10 : x
2. Step 2: Convert to fraction form
   219,074,871.56/328,090,646.12 = 126,764,068.10/x
3. Step 3: Cross multiply
   219,074,871.56x = 328,090,646.12 × 126,764,068.10
4. Step 4: Simplify right side
   219,074,871.56x = 41,590,105,007,728,680
5. Step 5: Solve for x
   x = 41,590,105,007,728,680/219,074,871.56
6. Step 6: Final answer
   x = 189,844,251.47