Finding the Fourth Proportional to 139,909,546.52, 193,075,516.86 and 78,033,892.76

Step by Step Solution

1. Step 1: Write the proportion equation
   139,909,546.52 : 193,075,516.86 = 78,033,892.76 : x
2. Step 2: Convert to fraction form
   139,909,546.52/193,075,516.86 = 78,033,892.76/x
3. Step 3: Cross multiply
   139,909,546.52x = 193,075,516.86 × 78,033,892.76
4. Step 4: Simplify right side
   139,909,546.52x = 15,066,434,177,234,814
5. Step 5: Solve for x
   x = 15,066,434,177,234,814/139,909,546.52
6. Step 6: Final answer
   x = 107,686,963.13