Finding the Fourth Proportional to 139,739,461.62, 192,841,247.61 and 81,036,980.88

Step by Step Solution

1. Step 1: Write the proportion equation
   139,739,461.62 : 192,841,247.61 = 81,036,980.88 : x
2. Step 2: Convert to fraction form
   139,739,461.62/192,841,247.61 = 81,036,980.88/x
3. Step 3: Cross multiply
   139,739,461.62x = 192,841,247.61 × 81,036,980.88
4. Step 4: Simplify right side
   139,739,461.62x = 15,627,272,495,446,916
5. Step 5: Solve for x
   x = 15,627,272,495,446,916/139,739,461.62
6. Step 6: Final answer
   x = 111,831,492.08