Finding the Fourth Proportional to 139,411.07, 208,835.93 and 64,427.95

Step by Step Solution

1. Step 1: Write the proportion equation
   139,411.07 : 208,835.93 = 64,427.95 : x
2. Step 2: Convert to fraction form
   139,411.07/208,835.93 = 64,427.95/x
3. Step 3: Cross multiply
   139,411.07x = 208,835.93 × 64,427.95
4. Step 4: Simplify right side
   139,411.07x = 13,454,870,495.22
5. Step 5: Solve for x
   x = 13,454,870,495.22/139,411.07
6. Step 6: Final answer
   x = 96,512.21