Finding the Fourth Proportional to 139,432,632.57, 208,745,062.59 and 105,033,905.19

Step by Step Solution

1. Step 1: Write the proportion equation
   139,432,632.57 : 208,745,062.59 = 105,033,905.19 : x
2. Step 2: Convert to fraction form
   139,432,632.57/208,745,062.59 = 105,033,905.19/x
3. Step 3: Cross multiply
   139,432,632.57x = 208,745,062.59 × 105,033,905.19
4. Step 4: Simplify right side
   139,432,632.57x = 21,925,309,111,914,952
5. Step 5: Solve for x
   x = 21,925,309,111,914,952/139,432,632.57
6. Step 6: Final answer
   x = 157,246,612.28