Finding the Fourth Proportional to 93,111.32, 139,580.58 and 42,472.28

Step by Step Solution

1. Step 1: Write the proportion equation
   93,111.32 : 139,580.58 = 42,472.28 : x
2. Step 2: Convert to fraction form
   93,111.32/139,580.58 = 42,472.28/x
3. Step 3: Cross multiply
   93,111.32x = 139,580.58 × 42,472.28
4. Step 4: Simplify right side
   93,111.32x = 5,928,305,476.32
5. Step 5: Solve for x
   x = 5,928,305,476.32/93,111.32
6. Step 6: Final answer
   x = 63,669.01