Finding the Fourth Proportional to 72,256.34, 99,733.78 and 42,047.50

Step by Step Solution

1. Step 1: Write the proportion equation
   72,256.34 : 99,733.78 = 42,047.50 : x
2. Step 2: Convert to fraction form
   72,256.34/99,733.78 = 42,047.50/x
3. Step 3: Cross multiply
   72,256.34x = 99,733.78 × 42,047.50
4. Step 4: Simplify right side
   72,256.34x = 4,193,556,114.55
5. Step 5: Solve for x
   x = 4,193,556,114.55/72,256.34
6. Step 6: Final answer
   x = 58,037.21