Finding the Fourth Proportional to 48,427.95, 72,429.46 and 43,128.50

Step by Step Solution

1. Step 1: Write the proportion equation
   48,427.95 : 72,429.46 = 43,128.50 : x
2. Step 2: Convert to fraction form
   48,427.95/72,429.46 = 43,128.50/x
3. Step 3: Cross multiply
   48,427.95x = 72,429.46 × 43,128.50
4. Step 4: Simplify right side
   48,427.95x = 3,123,773,903.06
5. Step 5: Solve for x
   x = 3,123,773,903.06/48,427.95
6. Step 6: Final answer
   x = 64,503.53