Finding the Fourth Proportional to 72,553, 100,123.50 and 42,359.26

Step by Step Solution

1. Step 1: Write the proportion equation
   72,553 : 100,123.50 = 42,359.26 : x
2. Step 2: Convert to fraction form
   72,553/100,123.50 = 42,359.26/x
3. Step 3: Cross multiply
   72,553x = 100,123.50 × 42,359.26
4. Step 4: Simplify right side
   72,553x = 4,241,157,368.61
5. Step 5: Solve for x
   x = 4,241,157,368.61/72,553
6. Step 6: Final answer
   x = 58,455.99