Finding the Fourth Proportional to 67,128.95, 92,637.82 and 38,457.89

Step by Step Solution

1. Step 1: Write the proportion equation
   67,128.95 : 92,637.82 = 38,457.89 : x
2. Step 2: Convert to fraction form
   67,128.95/92,637.82 = 38,457.89/x
3. Step 3: Cross multiply
   67,128.95x = 92,637.82 × 38,457.89
4. Step 4: Simplify right side
   67,128.95x = 3,562,654,899.11
5. Step 5: Solve for x
   x = 3,562,654,899.11/67,128.95
6. Step 6: Final answer
   x = 53,071.81