Finding the Fourth Proportional to 116,123.96, 174,143.42 and 91,212.51

Step by Step Solution

1. Step 1: Write the proportion equation
   116,123.96 : 174,143.42 = 91,212.51 : x
2. Step 2: Convert to fraction form
   116,123.96/174,143.42 = 91,212.51/x
3. Step 3: Cross multiply
   116,123.96x = 174,143.42 × 91,212.51
4. Step 4: Simplify right side
   116,123.96x = 15,884,058,977.21
5. Step 5: Solve for x
   x = 15,884,058,977.21/116,123.96
6. Step 6: Final answer
   x = 136,785.37