Finding the Fourth Proportional to 149,451.09, 224,242.65 and 78,356.72

Step by Step Solution

1. Step 1: Write the proportion equation
   149,451.09 : 224,242.65 = 78,356.72 : x
2. Step 2: Convert to fraction form
   149,451.09/224,242.65 = 78,356.72/x
3. Step 3: Cross multiply
   149,451.09x = 224,242.65 × 78,356.72
4. Step 4: Simplify right side
   149,451.09x = 17,570,917,416.89
5. Step 5: Solve for x
   x = 17,570,917,416.89/149,451.09
6. Step 6: Final answer
   x = 117,569.68