Finding the Fourth Proportional to 91,887, 137,867.72 and 62,287.96

Step by Step Solution

1. Step 1: Write the proportion equation
   91,887 : 137,867.72 = 62,287.96 : x
2. Step 2: Convert to fraction form
   91,887/137,867.72 = 62,287.96/x
3. Step 3: Cross multiply
   91,887x = 137,867.72 × 62,287.96
4. Step 4: Simplify right side
   91,887x = 8,587,499,028.65
5. Step 5: Solve for x
   x = 8,587,499,028.65/91,887
6. Step 6: Final answer
   x = 93,457.17