Finding the Fourth Proportional to 243,443.53, 364,620.78 and 140,735.01

Step by Step Solution

1. Step 1: Write the proportion equation
   243,443.53 : 364,620.78 = 140,735.01 : x
2. Step 2: Convert to fraction form
   243,443.53/364,620.78 = 140,735.01/x
3. Step 3: Cross multiply
   243,443.53x = 364,620.78 × 140,735.01
4. Step 4: Simplify right side
   243,443.53x = 51,314,909,119.51
5. Step 5: Solve for x
   x = 51,314,909,119.51/243,443.53
6. Step 6: Final answer
   x = 210,787.73