Finding the Fourth Proportional to 93,111.42, 139,688.91 and 30,781.92

Step by Step Solution

1. Step 1: Write the proportion equation
   93,111.42 : 139,688.91 = 30,781.92 : x
2. Step 2: Convert to fraction form
   93,111.42/139,688.91 = 30,781.92/x
3. Step 3: Cross multiply
   93,111.42x = 139,688.91 × 30,781.92
4. Step 4: Simplify right side
   93,111.42x = 4,299,892,852.51
5. Step 5: Solve for x
   x = 4,299,892,852.51/93,111.42
6. Step 6: Final answer
   x = 46,180.08