Finding the Fourth Proportional to 279,483.90, 385,687.83 and 152,159.50

Step by Step Solution

1. Step 1: Write the proportion equation
   279,483.90 : 385,687.83 = 152,159.50 : x
2. Step 2: Convert to fraction form
   279,483.90/385,687.83 = 152,159.50/x
3. Step 3: Cross multiply
   279,483.90x = 385,687.83 × 152,159.50
4. Step 4: Simplify right side
   279,483.90x = 58,686,067,368.89
5. Step 5: Solve for x
   x = 58,686,067,368.89/279,483.90
6. Step 6: Final answer
   x = 209,980.14