Finding the Fourth Proportional to 139,303.86, 208,991.16 and 64,477.98

Step by Step Solution

1. Step 1: Write the proportion equation
   139,303.86 : 208,991.16 = 64,477.98 : x
2. Step 2: Convert to fraction form
   139,303.86/208,991.16 = 64,477.98/x
3. Step 3: Cross multiply
   139,303.86x = 208,991.16 × 64,477.98
4. Step 4: Simplify right side
   139,303.86x = 13,475,327,834.66
5. Step 5: Solve for x
   x = 13,475,327,834.66/139,303.86
6. Step 6: Final answer
   x = 96,733.34