Finding the Fourth Proportional to 139,038.02, 191,871.96 and 77,784.35

Step by Step Solution

1. Step 1: Write the proportion equation
   139,038.02 : 191,871.96 = 77,784.35 : x
2. Step 2: Convert to fraction form
   139,038.02/191,871.96 = 77,784.35/x
3. Step 3: Cross multiply
   139,038.02x = 191,871.96 × 77,784.35
4. Step 4: Simplify right side
   139,038.02x = 14,924,635,691.83
5. Step 5: Solve for x
   x = 14,924,635,691.83/139,038.02
6. Step 6: Final answer
   x = 107,342.12