Finding the Fourth Proportional to 139,630.86, 209,446.29 and 64,741.14

Step by Step Solution

1. Step 1: Write the proportion equation
   139,630.86 : 209,446.29 = 64,741.14 : x
2. Step 2: Convert to fraction form
   139,630.86/209,446.29 = 64,741.14/x
3. Step 3: Cross multiply
   139,630.86x = 209,446.29 × 64,741.14
4. Step 4: Simplify right side
   139,630.86x = 13,559,791,583.37
5. Step 5: Solve for x
   x = 13,559,791,583.37/139,630.86
6. Step 6: Final answer
   x = 97,111.71