Finding the Fourth Proportional to 139,142.01, 208,696.00 and 59,212.10

Step by Step Solution

1. Step 1: Write the proportion equation
   139,142.01 : 208,696.00 = 59,212.10 : x
2. Step 2: Convert to fraction form
   139,142.01/208,696.00 = 59,212.10/x
3. Step 3: Cross multiply
   139,142.01x = 208,696.00 × 59,212.10
4. Step 4: Simplify right side
   139,142.01x = 12,357,327,230.09
5. Step 5: Solve for x
   x = 12,357,327,230.09/139,142.01
6. Step 6: Final answer
   x = 88,810.90