Finding the Fourth Proportional to 912,200,931.27, 1,368,163,144.67 and 248,266,688.58

Step by Step Solution

1. Step 1: Write the proportion equation
   912,200,931.27 : 1,368,163,144.67 = 248,266,688.58 : x
2. Step 2: Convert to fraction form
   912,200,931.27/1,368,163,144.67 = 248,266,688.58/x
3. Step 3: Cross multiply
   912,200,931.27x = 1,368,163,144.67 × 248,266,688.58
4. Step 4: Simplify right side
   912,200,931.27x = 339,669,333,363,179,072
5. Step 5: Solve for x
   x = 339,669,333,363,179,072/912,200,931.27
6. Step 6: Final answer
   x = 372,362,405.82