Finding the Fourth Proportional to 66,971.88, 92,428.56 and 42,795

Step by Step Solution

1. Step 1: Write the proportion equation
   66,971.88 : 92,428.56 = 42,795 : x
2. Step 2: Convert to fraction form
   66,971.88/92,428.56 = 42,795/x
3. Step 3: Cross multiply
   66,971.88x = 92,428.56 × 42,795
4. Step 4: Simplify right side
   66,971.88x = 3,955,480,225.20
5. Step 5: Solve for x
   x = 3,955,480,225.20/66,971.88
6. Step 6: Final answer
   x = 59,061.81