Finding the Fourth Proportional to 93,019.14, 139,525.65 and 40,428.72

Step by Step Solution

1. Step 1: Write the proportion equation
   93,019.14 : 139,525.65 = 40,428.72 : x
2. Step 2: Convert to fraction form
   93,019.14/139,525.65 = 40,428.72/x
3. Step 3: Cross multiply
   93,019.14x = 139,525.65 × 40,428.72
4. Step 4: Simplify right side
   93,019.14x = 5,640,843,436.67
5. Step 5: Solve for x
   x = 5,640,843,436.67/93,019.14
6. Step 6: Final answer
   x = 60,641.75