Finding the Fourth Proportional to 319,123,740.99, 478,831,057.72 and 163,786,633.30

Step by Step Solution

1. Step 1: Write the proportion equation
   319,123,740.99 : 478,831,057.72 = 163,786,633.30 : x
2. Step 2: Convert to fraction form
   319,123,740.99/478,831,057.72 = 163,786,633.30/x
3. Step 3: Cross multiply
   319,123,740.99x = 478,831,057.72 × 163,786,633.30
4. Step 4: Simplify right side
   319,123,740.99x = 78,426,126,863,436,784
5. Step 5: Solve for x
   x = 78,426,126,863,436,784/319,123,740.99
6. Step 6: Final answer
   x = 245,754,598.58