Finding the Fourth Proportional to 113,562.51, 156,721.55 and 65,830.83

Step by Step Solution

1. Step 1: Write the proportion equation
   113,562.51 : 156,721.55 = 65,830.83 : x
2. Step 2: Convert to fraction form
   113,562.51/156,721.55 = 65,830.83/x
3. Step 3: Cross multiply
   113,562.51x = 156,721.55 × 65,830.83
4. Step 4: Simplify right side
   113,562.51x = 10,317,109,715.39
5. Step 5: Solve for x
   x = 10,317,109,715.39/113,562.51
6. Step 6: Final answer
   x = 90,849.61