Finding the Fourth Proportional to 111,837.10, 156,779.30 and 111,837.10

Step by Step Solution

1. Step 1: Write the proportion equation
   111,837.10 : 156,779.30 = 111,837.10 : x
2. Step 2: Convert to fraction form
   111,837.10/156,779.30 = 111,837.10/x
3. Step 3: Cross multiply
   111,837.10x = 156,779.30 × 111,837.10
4. Step 4: Simplify right side
   111,837.10x = 17,533,742,252.03
5. Step 5: Solve for x
   x = 17,533,742,252.03/111,837.10
6. Step 6: Final answer
   x = 156,779.30