Finding the Fourth Proportional to 113,129.51, 156,171.78 and 65,373.53

Step by Step Solution

1. Step 1: Write the proportion equation
   113,129.51 : 156,171.78 = 65,373.53 : x
2. Step 2: Convert to fraction form
   113,129.51/156,171.78 = 65,373.53/x
3. Step 3: Cross multiply
   113,129.51x = 156,171.78 × 65,373.53
4. Step 4: Simplify right side
   113,129.51x = 10,209,499,764.12
5. Step 5: Solve for x
   x = 10,209,499,764.12/113,129.51
6. Step 6: Final answer
   x = 90,246.13