Finding the Fourth Proportional to 101,384.19, 139,907.70 and 56,061

Step by Step Solution

1. Step 1: Write the proportion equation
   101,384.19 : 139,907.70 = 56,061 : x
2. Step 2: Convert to fraction form
   101,384.19/139,907.70 = 56,061/x
3. Step 3: Cross multiply
   101,384.19x = 139,907.70 × 56,061
4. Step 4: Simplify right side
   101,384.19x = 7,843,365,569.70
5. Step 5: Solve for x
   x = 7,843,365,569.70/101,384.19
6. Step 6: Final answer
   x = 77,362.81