Finding the Fourth Proportional to 375,673.56, 563,731.47 and 139,181.10

Step by Step Solution

1. Step 1: Write the proportion equation
   375,673.56 : 563,731.47 = 139,181.10 : x
2. Step 2: Convert to fraction form
   375,673.56/563,731.47 = 139,181.10/x
3. Step 3: Cross multiply
   375,673.56x = 563,731.47 × 139,181.10
4. Step 4: Simplify right side
   375,673.56x = 78,460,766,099.22
5. Step 5: Solve for x
   x = 78,460,766,099.22/375,673.56
6. Step 6: Final answer
   x = 208,853.58