Finding the Fourth Proportional to 530,111.10, 740,580.90 and 530,111.10

Step by Step Solution

1. Step 1: Write the proportion equation
   530,111.10 : 740,580.90 = 530,111.10 : x
2. Step 2: Convert to fraction form
   530,111.10/740,580.90 = 530,111.10/x
3. Step 3: Cross multiply
   530,111.10x = 740,580.90 × 530,111.10
4. Step 4: Simplify right side
   530,111.10x = 392,590,155,537.99
5. Step 5: Solve for x
   x = 392,590,155,537.99/530,111.10
6. Step 6: Final answer
   x = 740,580.90