Finding the Fourth Proportional to 93,152.78, 139,619.83 and 43,127.21

Step by Step Solution

1. Step 1: Write the proportion equation
   93,152.78 : 139,619.83 = 43,127.21 : x
2. Step 2: Convert to fraction form
   93,152.78/139,619.83 = 43,127.21/x
3. Step 3: Cross multiply
   93,152.78x = 139,619.83 × 43,127.21
4. Step 4: Simplify right side
   93,152.78x = 6,021,413,536.69
5. Step 5: Solve for x
   x = 6,021,413,536.69/93,152.78
6. Step 6: Final answer
   x = 64,640.19