Finding the Fourth Proportional to 139,152,763.89, 208,547,570.15 and 77,739,441.93

Step by Step Solution

1. Step 1: Write the proportion equation
   139,152,763.89 : 208,547,570.15 = 77,739,441.93 : x
2. Step 2: Convert to fraction form
   139,152,763.89/208,547,570.15 = 77,739,441.93/x
3. Step 3: Cross multiply
   139,152,763.89x = 208,547,570.15 × 77,739,441.93
4. Step 4: Simplify right side
   139,152,763.89x = 16,212,371,719,659,026
5. Step 5: Solve for x
   x = 16,212,371,719,659,026/139,152,763.89
6. Step 6: Final answer
   x = 116,507,723.36