Finding the Fourth Proportional to 152,638.01, 210,457.40 and 98,903.42

Step by Step Solution

1. Step 1: Write the proportion equation
   152,638.01 : 210,457.40 = 98,903.42 : x
2. Step 2: Convert to fraction form
   152,638.01/210,457.40 = 98,903.42/x
3. Step 3: Cross multiply
   152,638.01x = 210,457.40 × 98,903.42
4. Step 4: Simplify right side
   152,638.01x = 20,814,955,077.50
5. Step 5: Solve for x
   x = 20,814,955,077.50/152,638.01
6. Step 6: Final answer
   x = 136,368.10