Finding the Fourth Proportional to 152,402.98, 210,270.61 and 98,602.78

Step by Step Solution

1. Step 1: Write the proportion equation
   152,402.98 : 210,270.61 = 98,602.78 : x
2. Step 2: Convert to fraction form
   152,402.98/210,270.61 = 98,602.78/x
3. Step 3: Cross multiply
   152,402.98x = 210,270.61 × 98,602.78
4. Step 4: Simplify right side
   152,402.98x = 20,733,266,698.30
5. Step 5: Solve for x
   x = 20,733,266,698.30/152,402.98
6. Step 6: Final answer
   x = 136,042.40