Finding the Fourth Proportional to 105,020.10, 157,530.15 and 105,020.10

Step by Step Solution

1. Step 1: Write the proportion equation
   105,020.10 : 157,530.15 = 105,020.10 : x
2. Step 2: Convert to fraction form
   105,020.10/157,530.15 = 105,020.10/x
3. Step 3: Cross multiply
   105,020.10x = 157,530.15 × 105,020.10
4. Step 4: Simplify right side
   105,020.10x = 16,543,832,106.02
5. Step 5: Solve for x
   x = 16,543,832,106.02/105,020.10
6. Step 6: Final answer
   x = 157,530.15