Finding the Fourth Proportional to 131,491, 181,457.58 and 71,875

Step by Step Solution

1. Step 1: Write the proportion equation
   131,491 : 181,457.58 = 71,875 : x
2. Step 2: Convert to fraction form
   131,491/181,457.58 = 71,875/x
3. Step 3: Cross multiply
   131,491x = 181,457.58 × 71,875
4. Step 4: Simplify right side
   131,491x = 13,042,263,562.50
5. Step 5: Solve for x
   x = 13,042,263,562.50/131,491
6. Step 6: Final answer
   x = 99,187.50