Finding the Fourth Proportional to 72,632.34, 100,215 and 42,400.35

Step by Step Solution

1. Step 1: Write the proportion equation
   72,632.34 : 100,215 = 42,400.35 : x
2. Step 2: Convert to fraction form
   72,632.34/100,215 = 42,400.35/x
3. Step 3: Cross multiply
   72,632.34x = 100,215 × 42,400.35
4. Step 4: Simplify right side
   72,632.34x = 4,249,151,075.25
5. Step 5: Solve for x
   x = 4,249,151,075.25/72,632.34
6. Step 6: Final answer
   x = 58,502.19