Finding the Fourth Proportional to 146,191.51, 201,688.71 and 91,720.60

Step by Step Solution

1. Step 1: Write the proportion equation
   146,191.51 : 201,688.71 = 91,720.60 : x
2. Step 2: Convert to fraction form
   146,191.51/201,688.71 = 91,720.60/x
3. Step 3: Cross multiply
   146,191.51x = 201,688.71 × 91,720.60
4. Step 4: Simplify right side
   146,191.51x = 18,499,009,494.43
5. Step 5: Solve for x
   x = 18,499,009,494.43/146,191.51
6. Step 6: Final answer
   x = 126,539.56