Finding the Fourth Proportional to 380,723.73, 570,611.71 and 245,431.05

Step by Step Solution

1. Step 1: Write the proportion equation
   380,723.73 : 570,611.71 = 245,431.05 : x
2. Step 2: Convert to fraction form
   380,723.73/570,611.71 = 245,431.05/x
3. Step 3: Cross multiply
   380,723.73x = 570,611.71 × 245,431.05
4. Step 4: Simplify right side
   380,723.73x = 140,045,831,127.60
5. Step 5: Solve for x
   x = 140,045,831,127.60/380,723.73
6. Step 6: Final answer
   x = 367,841.09