Finding the Fourth Proportional to 101,385.04, 139,908.58 and 56,061.48

Step by Step Solution

1. Step 1: Write the proportion equation
   101,385.04 : 139,908.58 = 56,061.48 : x
2. Step 2: Convert to fraction form
   101,385.04/139,908.58 = 56,061.48/x
3. Step 3: Cross multiply
   101,385.04x = 139,908.58 × 56,061.48
4. Step 4: Simplify right side
   101,385.04x = 7,843,481,489.92
5. Step 5: Solve for x
   x = 7,843,481,489.92/101,385.04
6. Step 6: Final answer
   x = 77,363.30