Finding the Fourth Proportional to 92,681.81, 139,064.16 and 42,735.13

Step by Step Solution

1. Step 1: Write the proportion equation
   92,681.81 : 139,064.16 = 42,735.13 : x
2. Step 2: Convert to fraction form
   92,681.81/139,064.16 = 42,735.13/x
3. Step 3: Cross multiply
   92,681.81x = 139,064.16 × 42,735.13
4. Step 4: Simplify right side
   92,681.81x = 5,942,924,955.94
5. Step 5: Solve for x
   x = 5,942,924,955.94/92,681.81
6. Step 6: Final answer
   x = 64,121.81