Finding the Fourth Proportional to 281,468.42, 388,427.01 and 152,408.30

Step by Step Solution

1. Step 1: Write the proportion equation
   281,468.42 : 388,427.01 = 152,408.30 : x
2. Step 2: Convert to fraction form
   281,468.42/388,427.01 = 152,408.30/x
3. Step 3: Cross multiply
   281,468.42x = 388,427.01 × 152,408.30
4. Step 4: Simplify right side
   281,468.42x = 59,199,500,268.18
5. Step 5: Solve for x
   x = 59,199,500,268.18/281,468.42
6. Step 6: Final answer
   x = 210,323.77