Finding the Fourth Proportional to 78,881.32, 108,856.42 and 43,071.40

Step by Step Solution

1. Step 1: Write the proportion equation
   78,881.32 : 108,856.42 = 43,071.40 : x
2. Step 2: Convert to fraction form
   78,881.32/108,856.42 = 43,071.40/x
3. Step 3: Cross multiply
   78,881.32x = 108,856.42 × 43,071.40
4. Step 4: Simplify right side
   78,881.32x = 4,688,598,408.39
5. Step 5: Solve for x
   x = 4,688,598,408.39/78,881.32
6. Step 6: Final answer
   x = 59,438.64