Finding the Fourth Proportional to 279,379.69, 385,543.98 and 152,056.19

Step by Step Solution

1. Step 1: Write the proportion equation
   279,379.69 : 385,543.98 = 152,056.19 : x
2. Step 2: Convert to fraction form
   279,379.69/385,543.98 = 152,056.19/x
3. Step 3: Cross multiply
   279,379.69x = 385,543.98 × 152,056.19
4. Step 4: Simplify right side
   279,379.69x = 58,624,349,640.10
5. Step 5: Solve for x
   x = 58,624,349,640.10/279,379.69
6. Step 6: Final answer
   x = 209,837.55