Finding the Fourth Proportional to 139,981.74, 210,009.64 and 73,404.00

Step by Step Solution

1. Step 1: Write the proportion equation
   139,981.74 : 210,009.64 = 73,404.00 : x
2. Step 2: Convert to fraction form
   139,981.74/210,009.64 = 73,404.00/x
3. Step 3: Cross multiply
   139,981.74x = 210,009.64 × 73,404.00
4. Step 4: Simplify right side
   139,981.74x = 15,415,546,771.58
5. Step 5: Solve for x
   x = 15,415,546,771.58/139,981.74
6. Step 6: Final answer
   x = 110,125.41