Finding the Fourth Proportional to 100,759, 139,048.23 and 56,047

Step by Step Solution

1. Step 1: Write the proportion equation
   100,759 : 139,048.23 = 56,047 : x
2. Step 2: Convert to fraction form
   100,759/139,048.23 = 56,047/x
3. Step 3: Cross multiply
   100,759x = 139,048.23 × 56,047
4. Step 4: Simplify right side
   100,759x = 7,793,236,146.81
5. Step 5: Solve for x
   x = 7,793,236,146.81/100,759
6. Step 6: Final answer
   x = 77,345.31