Finding the Fourth Proportional to 71,290.64, 98,374.34 and 42,604.61

Step by Step Solution

1. Step 1: Write the proportion equation
   71,290.64 : 98,374.34 = 42,604.61 : x
2. Step 2: Convert to fraction form
   71,290.64/98,374.34 = 42,604.61/x
3. Step 3: Cross multiply
   71,290.64x = 98,374.34 × 42,604.61
4. Step 4: Simplify right side
   71,290.64x = 4,191,199,684.81
5. Step 5: Solve for x
   x = 4,191,199,684.81/71,290.64
6. Step 6: Final answer
   x = 58,790.33