Finding the Fourth Proportional to 101,411.51, 139,946.69 and 56,085.94

Step by Step Solution

1. Step 1: Write the proportion equation
   101,411.51 : 139,946.69 = 56,085.94 : x
2. Step 2: Convert to fraction form
   101,411.51/139,946.69 = 56,085.94/x
3. Step 3: Cross multiply
   101,411.51x = 139,946.69 × 56,085.94
4. Step 4: Simplify right side
   101,411.51x = 7,849,040,678.38
5. Step 5: Solve for x
   x = 7,849,040,678.38/101,411.51
6. Step 6: Final answer
   x = 77,397.93