Finding the Fourth Proportional to 113,603.81, 156,780.11 and 62,616.47

Step by Step Solution

1. Step 1: Write the proportion equation
   113,603.81 : 156,780.11 = 62,616.47 : x
2. Step 2: Convert to fraction form
   113,603.81/156,780.11 = 62,616.47/x
3. Step 3: Cross multiply
   113,603.81x = 156,780.11 × 62,616.47
4. Step 4: Simplify right side
   113,603.81x = 9,817,016,741.33
5. Step 5: Solve for x
   x = 9,817,016,741.33/113,603.81
6. Step 6: Final answer
   x = 86,414.50