Finding the Fourth Proportional to 278,863, 384,820.41 and 151,535.86

Step by Step Solution

1. Step 1: Write the proportion equation
   278,863 : 384,820.41 = 151,535.86 : x
2. Step 2: Convert to fraction form
   278,863/384,820.41 = 151,535.86/x
3. Step 3: Cross multiply
   278,863x = 384,820.41 × 151,535.86
4. Step 4: Simplify right side
   278,863x = 58,314,091,774.90
5. Step 5: Solve for x
   x = 58,314,091,774.90/278,863
6. Step 6: Final answer
   x = 209,113.76