Finding the Fourth Proportional to 308,947,123.72, 426,354,718.65 and 167,818,299.76

Step by Step Solution

1. Step 1: Write the proportion equation
   308,947,123.72 : 426,354,718.65 = 167,818,299.76 : x
2. Step 2: Convert to fraction form
   308,947,123.72/426,354,718.65 = 167,818,299.76/x
3. Step 3: Cross multiply
   308,947,123.72x = 426,354,718.65 × 167,818,299.76
4. Step 4: Simplify right side
   308,947,123.72x = 71,550,123,976,364,384
5. Step 5: Solve for x
   x = 71,550,123,976,364,384/308,947,123.72
6. Step 6: Final answer
   x = 231,593,429.70