Finding the Fourth Proportional to 102,829,142.98, 141,904,492.35 and 55,786,216.31

Step by Step Solution

1. Step 1: Write the proportion equation
   102,829,142.98 : 141,904,492.35 = 55,786,216.31 : x
2. Step 2: Convert to fraction form
   102,829,142.98/141,904,492.35 = 55,786,216.31/x
3. Step 3: Cross multiply
   102,829,142.98x = 141,904,492.35 × 55,786,216.31
4. Step 4: Simplify right side
   102,829,142.98x = 7,916,314,706,081,274
5. Step 5: Solve for x
   x = 7,916,314,706,081,274/102,829,142.98
6. Step 6: Final answer
   x = 76,985,127.73