Finding the Fourth Proportional to 139,432,577.30, 208,744,979.98 and 105,033,849.87

Step by Step Solution

1. Step 1: Write the proportion equation
   139,432,577.30 : 208,744,979.98 = 105,033,849.87 : x
2. Step 2: Convert to fraction form
   139,432,577.30/208,744,979.98 = 105,033,849.87/x
3. Step 3: Cross multiply
   139,432,577.30x = 208,744,979.98 × 105,033,849.87
4. Step 4: Simplify right side
   139,432,577.30x = 21,925,288,888,335,476
5. Step 5: Solve for x
   x = 21,925,288,888,335,476/139,432,577.30
6. Step 6: Final answer
   x = 157,246,529.56