Finding the Fourth Proportional to 438,531, 657,900.50 and 143,043

Step by Step Solution

1. Step 1: Write the proportion equation
   438,531 : 657,900.50 = 143,043 : x
2. Step 2: Convert to fraction form
   438,531/657,900.50 = 143,043/x
3. Step 3: Cross multiply
   438,531x = 657,900.50 × 143,043
4. Step 4: Simplify right side
   438,531x = 94,108,061,221.50
5. Step 5: Solve for x
   x = 94,108,061,221.50/438,531
6. Step 6: Final answer
   x = 214,598.42