Finding the Fourth Proportional to 101,384.61, 139,907.99 and 56,061.09

Step by Step Solution

1. Step 1: Write the proportion equation
   101,384.61 : 139,907.99 = 56,061.09 : x
2. Step 2: Convert to fraction form
   101,384.61/139,907.99 = 56,061.09/x
3. Step 3: Cross multiply
   101,384.61x = 139,907.99 × 56,061.09
4. Step 4: Simplify right side
   101,384.61x = 7,843,394,419.11
5. Step 5: Solve for x
   x = 7,843,394,419.11/101,384.61
6. Step 6: Final answer
   x = 77,362.77