Finding the Fourth Proportional to 112,443.24, 155,165.58 and 62,139

Step by Step Solution

1. Step 1: Write the proportion equation
   112,443.24 : 155,165.58 = 62,139 : x
2. Step 2: Convert to fraction form
   112,443.24/155,165.58 = 62,139/x
3. Step 3: Cross multiply
   112,443.24x = 155,165.58 × 62,139
4. Step 4: Simplify right side
   112,443.24x = 9,641,833,975.62
5. Step 5: Solve for x
   x = 9,641,833,975.62/112,443.24
6. Step 6: Final answer
   x = 85,748.45