Finding the Fourth Proportional to 152,301.25, 210,146.55 and 98,578.81

Step by Step Solution

1. Step 1: Write the proportion equation
   152,301.25 : 210,146.55 = 98,578.81 : x
2. Step 2: Convert to fraction form
   152,301.25/210,146.55 = 98,578.81/x
3. Step 3: Cross multiply
   152,301.25x = 210,146.55 × 98,578.81
4. Step 4: Simplify right side
   152,301.25x = 20,715,996,824.61
5. Step 5: Solve for x
   x = 20,715,996,824.61/152,301.25
6. Step 6: Final answer
   x = 136,019.87