Finding the Fourth Proportional to 78,066.06, 117,103.98 and 31,312.86

Step by Step Solution

1. Step 1: Write the proportion equation
   78,066.06 : 117,103.98 = 31,312.86 : x
2. Step 2: Convert to fraction form
   78,066.06/117,103.98 = 31,312.86/x
3. Step 3: Cross multiply
   78,066.06x = 117,103.98 × 31,312.86
4. Step 4: Simplify right side
   78,066.06x = 3,666,860,531.18
5. Step 5: Solve for x
   x = 3,666,860,531.18/78,066.06
6. Step 6: Final answer
   x = 46,971.25