Finding the Fourth Proportional to 72,941.31, 109,357.29 and 30,870.72

Step by Step Solution

1. Step 1: Write the proportion equation
   72,941.31 : 109,357.29 = 30,870.72 : x
2. Step 2: Convert to fraction form
   72,941.31/109,357.29 = 30,870.72/x
3. Step 3: Cross multiply
   72,941.31x = 109,357.29 × 30,870.72
4. Step 4: Simplify right side
   72,941.31x = 3,375,938,279.55
5. Step 5: Solve for x
   x = 3,375,938,279.55/72,941.31
6. Step 6: Final answer
   x = 46,282.94