Finding the Fourth Proportional to 152,194.31, 210,112.61 and 91,780.25

Step by Step Solution

1. Step 1: Write the proportion equation
   152,194.31 : 210,112.61 = 91,780.25 : x
2. Step 2: Convert to fraction form
   152,194.31/210,112.61 = 91,780.25/x
3. Step 3: Cross multiply
   152,194.31x = 210,112.61 × 91,780.25
4. Step 4: Simplify right side
   152,194.31x = 19,284,187,873.95
5. Step 5: Solve for x
   x = 19,284,187,873.95/152,194.31
6. Step 6: Final answer
   x = 126,707.68