Finding the Fourth Proportional to 72,770.50, 100,386.54 and 42,536.07

Step by Step Solution

1. Step 1: Write the proportion equation
   72,770.50 : 100,386.54 = 42,536.07 : x
2. Step 2: Convert to fraction form
   72,770.50/100,386.54 = 42,536.07/x
3. Step 3: Cross multiply
   72,770.50x = 100,386.54 × 42,536.07
4. Step 4: Simplify right side
   72,770.50x = 4,270,048,892.50
5. Step 5: Solve for x
   x = 4,270,048,892.50/72,770.50
6. Step 6: Final answer
   x = 58,678.29