Finding the Fourth Proportional to 93,020.10, 139,530.15 and 93,020.10

Step by Step Solution

1. Step 1: Write the proportion equation
   93,020.10 : 139,530.15 = 93,020.10 : x
2. Step 2: Convert to fraction form
   93,020.10/139,530.15 = 93,020.10/x
3. Step 3: Cross multiply
   93,020.10x = 139,530.15 × 93,020.10
4. Step 4: Simplify right side
   93,020.10x = 12,979,108,506.02
5. Step 5: Solve for x
   x = 12,979,108,506.02/93,020.10
6. Step 6: Final answer
   x = 139,530.15