Finding the Fourth Proportional to 139,987, 209,980.50 and 41,491

Step by Step Solution

1. Step 1: Write the proportion equation
   139,987 : 209,980.50 = 41,491 : x
2. Step 2: Convert to fraction form
   139,987/209,980.50 = 41,491/x
3. Step 3: Cross multiply
   139,987x = 209,980.50 × 41,491
4. Step 4: Simplify right side
   139,987x = 8,712,300,925.50
5. Step 5: Solve for x
   x = 8,712,300,925.50/139,987
6. Step 6: Final answer
   x = 62,236.50