Finding the Fourth Proportional to 60,819.35, 83,970.19 and 54,434.87

Step by Step Solution

1. Step 1: Write the proportion equation
   60,819.35 : 83,970.19 = 54,434.87 : x
2. Step 2: Convert to fraction form
   60,819.35/83,970.19 = 54,434.87/x
3. Step 3: Cross multiply
   60,819.35x = 83,970.19 × 54,434.87
4. Step 4: Simplify right side
   60,819.35x = 4,570,905,820.59
5. Step 5: Solve for x
   x = 4,570,905,820.59/60,819.35
6. Step 6: Final answer
   x = 75,155.46