Finding the Fourth Proportional to 139,051.29, 208,577.27 and 39,212.01

Step by Step Solution

1. Step 1: Write the proportion equation
   139,051.29 : 208,577.27 = 39,212.01 : x
2. Step 2: Convert to fraction form
   139,051.29/208,577.27 = 39,212.01/x
3. Step 3: Cross multiply
   139,051.29x = 208,577.27 × 39,212.01
4. Step 4: Simplify right side
   139,051.29x = 8,178,733,312.88
5. Step 5: Solve for x
   x = 8,178,733,312.88/139,051.29
6. Step 6: Final answer
   x = 58,818.10