Finding the Fourth Proportional to 92,828.32, 139,123.32 and 42,190.36

Step by Step Solution

1. Step 1: Write the proportion equation
   92,828.32 : 139,123.32 = 42,190.36 : x
2. Step 2: Convert to fraction form
   92,828.32/139,123.32 = 42,190.36/x
3. Step 3: Cross multiply
   92,828.32x = 139,123.32 × 42,190.36
4. Step 4: Simplify right side
   92,828.32x = 5,869,662,955.20
5. Step 5: Solve for x
   x = 5,869,662,955.20/92,828.32
6. Step 6: Final answer
   x = 63,231.38