Finding the Fourth Proportional to 279,476.68, 385,665.72 and 152,152.72

Step by Step Solution

1. Step 1: Write the proportion equation
   279,476.68 : 385,665.72 = 152,152.72 : x
2. Step 2: Convert to fraction form
   279,476.68/385,665.72 = 152,152.72/x
3. Step 3: Cross multiply
   279,476.68x = 385,665.72 × 152,152.72
4. Step 4: Simplify right side
   279,476.68x = 58,680,088,308.76
5. Step 5: Solve for x
   x = 58,680,088,308.76/279,476.68
6. Step 6: Final answer
   x = 209,964.17