Finding the Fourth Proportional to 102,606.28, 153,804.83 and 58,139.10

Step by Step Solution

1. Step 1: Write the proportion equation
   102,606.28 : 153,804.83 = 58,139.10 : x
2. Step 2: Convert to fraction form
   102,606.28/153,804.83 = 58,139.10/x
3. Step 3: Cross multiply
   102,606.28x = 153,804.83 × 58,139.10
4. Step 4: Simplify right side
   102,606.28x = 8,942,074,101.16
5. Step 5: Solve for x
   x = 8,942,074,101.16/102,606.28
6. Step 6: Final answer
   x = 87,149.39