Finding the Fourth Proportional to 231,215.72, 346,613.41 and 88,970.25

Step by Step Solution

1. Step 1: Write the proportion equation
   231,215.72 : 346,613.41 = 88,970.25 : x
2. Step 2: Convert to fraction form
   231,215.72/346,613.41 = 88,970.25/x
3. Step 3: Cross multiply
   231,215.72x = 346,613.41 × 88,970.25
4. Step 4: Simplify right side
   231,215.72x = 30,838,281,741.05
5. Step 5: Solve for x
   x = 30,838,281,741.05/231,215.72
6. Step 6: Final answer
   x = 133,374.50