Finding the Fourth Proportional to 78,641.82, 108,526.95 and 42,831.81

Step by Step Solution

1. Step 1: Write the proportion equation
   78,641.82 : 108,526.95 = 42,831.81 : x
2. Step 2: Convert to fraction form
   78,641.82/108,526.95 = 42,831.81/x
3. Step 3: Cross multiply
   78,641.82x = 108,526.95 × 42,831.81
4. Step 4: Simplify right side
   78,641.82x = 4,648,405,702.28
5. Step 5: Solve for x
   x = 4,648,405,702.28/78,641.82
6. Step 6: Final answer
   x = 59,108.57