Finding the Fourth Proportional to 113,109.76, 156,085.24 and 62,129.18

Step by Step Solution

1. Step 1: Write the proportion equation
   113,109.76 : 156,085.24 = 62,129.18 : x
2. Step 2: Convert to fraction form
   113,109.76/156,085.24 = 62,129.18/x
3. Step 3: Cross multiply
   113,109.76x = 156,085.24 × 62,129.18
4. Step 4: Simplify right side
   113,109.76x = 9,697,447,971.30
5. Step 5: Solve for x
   x = 9,697,447,971.30/113,109.76
6. Step 6: Final answer
   x = 85,734.85