Finding the Fourth Proportional to 116,670.86, 160,963.68 and 76,407.58

Step by Step Solution

1. Step 1: Write the proportion equation
   116,670.86 : 160,963.68 = 76,407.58 : x
2. Step 2: Convert to fraction form
   116,670.86/160,963.68 = 76,407.58/x
3. Step 3: Cross multiply
   116,670.86x = 160,963.68 × 76,407.58
4. Step 4: Simplify right side
   116,670.86x = 12,298,845,256.69
5. Step 5: Solve for x
   x = 12,298,845,256.69/116,670.86
6. Step 6: Final answer
   x = 105,414.88