Finding the Fourth Proportional to 139,115.25, 208,699.93 and 59,152.30

Step by Step Solution

1. Step 1: Write the proportion equation
   139,115.25 : 208,699.93 = 59,152.30 : x
2. Step 2: Convert to fraction form
   139,115.25/208,699.93 = 59,152.30/x
3. Step 3: Cross multiply
   139,115.25x = 208,699.93 × 59,152.30
4. Step 4: Simplify right side
   139,115.25x = 12,345,080,869.34
5. Step 5: Solve for x
   x = 12,345,080,869.34/139,115.25
6. Step 6: Final answer
   x = 88,739.95