Finding the Fourth Proportional to 139,344,830.78, 192,301,407.18 and 76,626,070.76

Step by Step Solution

1. Step 1: Write the proportion equation
   139,344,830.78 : 192,301,407.18 = 76,626,070.76 : x
2. Step 2: Convert to fraction form
   139,344,830.78/192,301,407.18 = 76,626,070.76/x
3. Step 3: Cross multiply
   139,344,830.78x = 192,301,407.18 × 76,626,070.76
4. Step 4: Simplify right side
   139,344,830.78x = 14,735,301,233,822,254
5. Step 5: Solve for x
   x = 14,735,301,233,822,254/139,344,830.78
6. Step 6: Final answer
   x = 105,747,024.50