Finding the Fourth Proportional to 111,507.94, 153,801.42 and 102,339.01

Step by Step Solution

1. Step 1: Write the proportion equation
   111,507.94 : 153,801.42 = 102,339.01 : x
2. Step 2: Convert to fraction form
   111,507.94/153,801.42 = 102,339.01/x
3. Step 3: Cross multiply
   111,507.94x = 153,801.42 × 102,339.01
4. Step 4: Simplify right side
   111,507.94x = 15,739,885,059.39
5. Step 5: Solve for x
   x = 15,739,885,059.39/111,507.94
6. Step 6: Final answer
   x = 141,154.84