Finding the Fourth Proportional to 78,141.98, 117,090.12 and 60,415.94

Step by Step Solution

1. Step 1: Write the proportion equation
   78,141.98 : 117,090.12 = 60,415.94 : x
2. Step 2: Convert to fraction form
   78,141.98/117,090.12 = 60,415.94/x
3. Step 3: Cross multiply
   78,141.98x = 117,090.12 × 60,415.94
4. Step 4: Simplify right side
   78,141.98x = 7,074,109,664.51
5. Step 5: Solve for x
   x = 7,074,109,664.51/78,141.98
6. Step 6: Final answer
   x = 90,528.93