Finding the Fourth Proportional to 137,196.51, 189,104.72 and 91,858.47

Step by Step Solution

1. Step 1: Write the proportion equation
   137,196.51 : 189,104.72 = 91,858.47 : x
2. Step 2: Convert to fraction form
   137,196.51/189,104.72 = 91,858.47/x
3. Step 3: Cross multiply
   137,196.51x = 189,104.72 × 91,858.47
4. Step 4: Simplify right side
   137,196.51x = 17,370,869,789.69
5. Step 5: Solve for x
   x = 17,370,869,789.69/137,196.51
6. Step 6: Final answer
   x = 126,613.06